Question

resolva as equaçoes: a)16x-52=4x-4 b)7(x-6)=21 c)2(x-17)= -x\2

Answer 1

16x - 52 = 4x - 4
16x - 4x = -4 + 52
12x = 48
x = 48/12
x = 4

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7(x - 6) = 21
7x - 42 = 21
7x = 21 + 42
7x = 63
x = 63/7
x = 9

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2(x - 17) = -x/2
2x - 34 = -x/2

mmc = 2

4x - 68 = -x
4x + x = 68
5x = 68
x = 68/5

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