Simultaneous Equations | Revision Server | Page 1

blissful goblet Apr 10, 2023, 3:41 PM

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vestal fulcrum Apr 10, 2023, 3:41 PM

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it’s ,rotate

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yeah

blissful goblet Apr 10, 2023, 3:41 PM

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vestal fulcrum Apr 10, 2023, 3:41 PM

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👍👍

blissful goblet Apr 10, 2023, 3:41 PM

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vale ridgeBOT Apr 10, 2023, 3:41 PM

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blissful goblet Apr 10, 2023, 3:41 PM

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there

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ok so you need to make 2 things in common, they both need to be 6y so you can subtract, isolate x and subsitute:

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3(4x+2y=10) = 12x+6y=30

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2(5x+3y=12) = 10x+6y=24

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Now we have 6y in common, we can subtract to get just the x variable

amber vector Apr 10, 2023, 3:43 PM

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dond do elimination ngl

blissful goblet Apr 10, 2023, 3:43 PM

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12x+6y=30-10x+6y=24 = 2x=6

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Divide by 2 both sides

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x = 3

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Now substitute x = 3 into the first or second equation. 3(4) = 12, 12+2y = 10, 2y = -2, y = -1

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Hence, x = 3, y = -1

stark grove Apr 12, 2023, 5:23 PM

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make either the y or the x the same so i would first make the x the same so times the first equation by 5 to make it 20x+10y=50 and the second one by 4 to make it 20x+12y=48 then eliminate the x's because they are the same which leaves you with 10y=50 and 12y=48 minus then because the symbols are both + which leaves you with 2y=-2 which means y=-1 then substitute the y into one of the equations.

#Simultaneous Equations