#Equation problem

48 messages · Page 1 of 1 (latest)

lapis sable
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5x - [( x + 1) - 2 (x + 3)] = 2 (8 + x) - [(6 + x) - 5x]

left ferryBOT
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left ferryBOT
lapis sable
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5x - [( x + 1) - 2 (x + 3)] = 2 (8 + x) - [(6 + x) - 5x]

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guys

mystic gull
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hey

mystic gull
lapis sable
mystic gull
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okay, it helps to clear in pieces

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lets do left hand side first

lapis sable
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i'm all ears

mystic gull
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5x - [(x + 1) - 2(x + 3)]

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even in that, check
(x + 1) - 2(x + 3)

Can you simplify that?

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forget the big scary exp now
just focus on (x + 1) - 2(x + 3) righ tnow

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can you simplify it?

lapis sable
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yeah yeah

mystic gull
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simplify that

lapis sable
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umm

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x + 4 - 2?

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@mystic gull

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2x?

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idk

mystic gull
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oh, no
you know 2(x + 3) = 2x + 6?

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(basically whenever you see a multiplier with a bracket, just multiply each term like that)

lapis sable
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yeah forgot about that

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now after this what is it we gotta do

mystic gull
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Okay nevermind
Let me do left hand side for you so that you understand what I did
then you will solve the right hand side

cool?

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5x - [(x + 1) - 2(x + 3)]
see that inner bracket: (x + 1) - 2(x + 3)
We know that -2(x + 3) = -2x - 6 (we are multiplying by -2, so its negative)
so the inner expression is x + 1 - 2x - 6. Simplifying gives -x - 5

so this 5x - [(x + 1) - 2(x + 3)]
actually equals 5x - [-x - 5]
distributing negative: 5x + x + 5 = 6x + 5

You see how I simplified this side?
If you get it, try doing the other side. If not, ask me questions

mystic gull
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are you there? have any doubts about my approach?

lapis sable
mystic gull
lapis sable
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Joking

lapis sable
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@mystic gull Today I had my maths test (spoiler: I suck at maths, so don't expect anything good). I'll tell you the results sooner or later. Let's see how much you helped me

left ferryBOT
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@lapis sable

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lapis sable
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no

slate shoal
upper haven
lapis sable
lapis sable