Question

Решение уравнения:0,4*(х-9)-0,3*(х+2)=0,7

Answer 1

0.4х-3.6-0.3х-0.6=0.7
0.1х=4.3
х=43

Answer 2

$0.4(x-9)-0.3(x+2)=0.7 \\ 0.4x-3.6-0.3x-0.6=0.7 \\ 0.1x-4.2=0.7 \\ 0.1x=4.9 \\ x=49$