2 years ago

Substituition method 5x-3y+1=16 2x+5y=-6

1 answer:

3 0

5x - 3y + 1 = 16 ⇒ 10x - 6y + 2 = 16
2x + 5y + 0 = -6 ⇒ 10x + 25y + 0 = -6
 31y + 2 = 10
 -2 -2
 31y = 8
 31 31
 y = 8/31
 5x - 3(8/31) + 1 = 16
 5x - 24/31 + 1 = 16
 5x + 7/31 = 16
 -7/31 -7/31
 5x = 10 24/31
 5 5
 x = 2 24/155
 (x, y) = (2 24/155, 8/31)

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Keywords: linear equations, addition

Learn more about linear equations at:

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