angles + algebra

[strong jacinth]

3x + 10 = X +54

Subtract x from both sides

2x +10 = 54

-10 from. Both sides

2x = 44

X=22

[craggy falcon]

thank you so much!

Would this be done in a similar way?

[stark phoenix]

the lines on the sides mean its isosceles

so the other angle would be the same

so u add them all up and solve the equation for 180

[craggy falcon]

right

5x-9-5x-9=180

[stark phoenix]

add them up

[craggy falcon]

28=180

[stark phoenix]

no i mean u gotta add 5x-9 and 5x-9

yk angles in a triangle add up to 180?

so it would be 5x-9+5x-9 then u gotta add 90 since the lil square shows that its a right angle

all that equals 180

[craggy falcon]

Yes yes ok

So then what does X equal

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[stark phoenix]

so the entire thing would be 5x-9+5x-9+90=180

add up like terms and then solve for x

[craggy falcon]

so we leave our answer as that?

[stark phoenix]

no u need to solve for x

so simplify to 10x-18+90 = 180 i think

then move like terms together so its 10x=108