Question

0,3(6x+1,5)=2,1x+1,2
Решите уравнение

Answer 1

$0,3(6x+1,5)=2,1x+1,2\\1,8x+0,45=2,1x+1,2\\1,8x-2,1x=1,2-0,45\\-0,3x=0,75\\x=-2,5$