7x-4 = 3x+36
Add 4, it cancels out.. So,
7x = 3x+40
Now subtract 3x from 7x..
4x = 40..
40 divided by 4 is 10
So, X= 10
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7x-3=3x+8 7x-3x=8+3 4x=11 x=11/4=2.75
7x = 3 x = 3/7
7x + y + 3 = y7x + 3 = 07x = -3x = -3/7
7x + 8 = 10x - 2 ∴ 3x = 10 ∴ x = 10/3
3x - 2y + 7x + 4y = 3x + 7x - 2y +4y = (3+7)x + (-2+4)y = 10x + 2y