Question

me ajuda aqui por favor ​

Answer 1

Resposta:

Explicação passo a passo:

$a)$

$20x-4=5x$

$20x-5x=4$

$15x=4$

$x=4/15$

$b)$

$4x=-8x+36$

$4x+8x=36$

$12x=36$

$x=36/12$

$x=3$

$c)$

$x-3=5$

$x=5+3$

$x=8$

$d)$

$x+2=7$

$x=7-2$

$x=5$

$e)$

$6x-4=2x+8$

$6x-2x=8+4$

$4x=12$

$x=12/4$

$x=3$

$f)$

$17x-2+4=10+5x$

$17x+2=10+5x$

$17x-5x=10-2$

$12x=8$

$x=8/12$

$x=2/3$

$g)$

$4x-10=2x+2$

$4x-2x=2+10$

$2x=12$

$x=12/2$

$x=6$

$h)$

$5x+6x-16=3x+2x-4$

$11x-16=5x-4$

$11x-5x=16-4$

$6x=12$

$x=12/6$

$x=2$

$i)$

$x-109=5$

$x=5+109$

$x=114$

$j)$

$15=x+1$

$x+1=15$

$x=15-1$

$x=14$

Answer 2

Resposta:

Explicação passo a passo: