Question

10-9x+2x=2-3x
4x-4-5x=-6+90
2-3x=-2x+12-3x
respd as equacoes sendo,U=Q

Answer 1

10 - 9x + 2x = 2 - 3x
10 - 7x = 2 - 3x
10 - 2 = - 3x + 7x
8 = 4x
4x = 8
x = 8/4
x = 2
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b)
4x - 4 - 5x = - 6 + 90
- x - 4 = 84
- 4 - 84 = x
- 88 = x
x = - 88 
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c)
2 - 3x = - 2x + 12 - 3x
2 - 3x = - 5x + 12
2 - 12 = - 5x + 3x
- 10 = - 2x ( - 1)
10 = 2x
2x = 10
x = 10/2
x = 5