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Anonymous
5y-4 = 7 5y = 7+4 = 11
y = 11 / 5 = 2.2
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x=12
Divide 28 by 4. X = 7
x= -8
45+4 = 49 49/7=7 7*7=49-4=45 so x=7
3x = 7 - 4x 3x + 4x = 7 - 4x + 4x 7x = 7 7x/7 = 7/7 x = 1