Question

Написать решение:
1) 3*(1-3х)=75
2)|х|+5=12

Answer 1

1)3*(1-3х) =75
3-9х=75
3-75=9х
9х=-72
х= -8
2)|х|+5=12
|х|=12-5
|х|=7
х=7 ; х=-7