Question

Determine a solução de casa equação:
a)10-(8x-2)=5x+2(-4x+1)

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

c)(x-3)-(x+2)+2(x-1)-5=0​

ME AJUDEMMM PFVR

Answer 1

Resposta e Explicação passo a passo:

a)10-(8x-2)=5x+2(-4x+1)

$10-(8x-2)=5x+2(-4x+1)\\-8x+12=5x-8x+2\\-8x+12=-3x+2\\-8x=-3x+2-12\\-8x=-3x-10\\-8x+3x=-10\\-5x=-10\\x=\frac{-10}{-5} \\x=2$

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

$5(x-3)-4(x+2)=2+3(1-2x)\\x-23=-6x+5\\x=-6x+5+23\\x=-6x+28\\x+6x=-6x+28+6x\\7x=28\\x=\frac{28}{7} \\x=4$

c)(x-3)-(x+2)+2(x-1)-5=0​

$\\(x-3)-(x+2)+2(x-1)-5=0\\x-3-\left(x+2\right)+2\left(x-1\right)-5=0\\x-3-\left(x+2\right)+2\left(x-1\right)-5-\left(-3-5\right)=0-\left(-3-5\right)\\x-\left(x+2\right)+2\left(x-1\right)=8\\2x-4=8\\2x=8+4\\2x=12\\x=\frac{12}{2} \\x=6$