Question

Me ajuda ae

resolva as 2 questões e coloque operaçoes

Answer 1

a) $4x-10=30$

$4x=30+10$

$4x=40$

$x=10$

b) $5x-2=3x+18$

$5x-3x=18+2$

$2x=20$

$x=10$


c) $2x+8=20$

$2x=20-8$

$2x=12$

$x=6$

d) $3x+5=x+15$

$3x-x=15-5$

$2x=10$

$x=5$.
2) $(4x-20)+(2x+10)=180$

$6x-10=180$

$6x=190$

$x=\dfrac{190}{6}$

$x=\dfrac{95}{3}$