Question

how to do solve: 2y -3x =7, 4Y-12=5X

Answer 1

ok i got this for ur answer , y=3/2x +7/2, and y=5/2x+3 but i am not sure on the first one but the second one i know is right :)

Answer 2

2y - 3x = 7
4y - 12 = 5x --> 4y - 5x = 12

now we have :
2y - 3x = 7 -->(-2)
4y - 5x = 12
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-4y + 6x = -14 (result of multiplying by -2)
4y - 5x = 12
-------------add
x = -2
now sub -2 in for x in either of the equations to find y
2y - 3x = 7
2y - 3(-2) = 7
2y + 6 = 7
2y = 7 - 6
2y = 1
y = 1/2

check...
4y - 5x = 12
4(1/2) - 5(-2) = 12
2 + 10 = 12
12 = 12 (correct)

x = -2 and y = 1/2