Question

a) (x - 3) - (x + 2) + 2(x - 1) - 5 =0 ?
b) 5(x - 3) - 4(x + 2) = 2 + 3(1 -2x) ?
c) 3x - 2(4x - 3) = 2 - 3(x - 1) ?
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Answer 1

Resposta:

Olá!

Explicação passo a passo:

a) $(x-3)-(x+2)+2(x-1)-5=0$

$x-3-x-2+2x-2-5=0$

$x-x+2x-3-2-2-5=0$

$2x-12=0$

$2x=12$

$x=\frac{12}{2}$

$x=6$

b) $5(x-3)-4(x+2)=2+3(1-2x)$

$5x-15-4x-8=2+3-6x$

$5x-4x+6x=2+3+15+8$

$7x=28$

$x=\frac{28}{7}$

$x=4$

c) $3x-2(4x-3)=2-3(x-1)$

$3x-8x+6=2-3x+3$

$3x-8x+3x=2+3-6$

$-2x=-1.(-1)$

$2x=1$

$x=\frac{1}{2}$

Bons Estudos!