Question

va rog rezolvati exercitiile:3x+81=381
2x+237=2013

Answer 1

$1)3x+81=381 \\ 3x=381-81 \\ 3x=300 \\ x=300:3 \\ x=100 \\ \\ 2)2x+237=2013 \\ 2x=2013-237 \\ 2x=1776 \\ x=1776:2 \\ x=888.$

Answer 2

$\displaystyle a).3x+81=381 \\ 3x=381-81 \\ 3x=300 \\ x= \frac{300}{3} \\ x=100 \\ b).2x+237=2013 \\ 2x=2013-237 \\ 2x=1776 \\ x= \frac{1776}{2} \\ x=888$