Question

Решите уравнение
2.4(2-3х)=-7х+10
3.-4(5-4х)=х+1
4.-4(-7+6х)=-9х-5

Answer 1

2.8-12х=7х-10
18=19х
х=18/19
3.-20+16х=х+1
15х=21
х=21/15
4.28-24х=-9х-5
33=15х
х=33/15