Question

resolva as equações : a) 4×+(7×+11=-11 b) 5×-(-×+22)=-4 c) 11×+(-3×+10=4×+2 d) 11×-(-3×+10)=×+2

Answer 1

A) 4x + 7x + 11 = -11
11x + 11 = -11
11x = -11 -11
11x = -22
x = -2


B) 5x - (- x + 22) = -4
5x + x - 22 = -4
6x + 22 = -4
6x = -4 + 22
6x = 18
x = 3


C) 11x + (-3x + 10) = 4x + 2
11x - 3x + 10 = 4x + 2
8x + 10 = 4x + 2
8x - 4x = 2 - 10
4x = -8
x = -2


D) 11x - (-3 + 10) = x + 2
11x - 7 = x + 2
11x - x = 2 + 7
10x = 9
x = 9
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10

Forma Alternativa: x = 0.9