Question

urgente
matemática:

1) 5x+x-4=4

2) 8x - 9 -x = -1
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5
3) 5x=2x+3

4)3 • (2-2x)= -7x

5) 4•(2-2x)+7x=5•(3+2x)

6) 6•(x-3)=7•(x+1)-16

7) x = 8
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3 9

8) 1 = x
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3 42

Answer 1

5) x= 7/-11
6)x=-41
7)×=312
8)é uma igualdade,portanto
x=1/342