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7x + y = 4y = 4 - 7x
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-7x + 6 + 7x - 2 = 4
6 = 7x + x First, add 7x and x.6 = 8xNow, divide both sides by 8.6/8 = xSimplify the answer.3/4 = x.
7x + 16 = 3x + 4 4x = -12 x = -3
x = 4
7x-4=9x+10-14=2xx=-7