Question

Уравнение
(x+2.1)*4=15.2
20 баллов

Answer 1

4х+8,4=15,2
4х=15,2-8,4
4х=6,8
х=6,8:4
х=1,7

Answer 2

спс

Answer 3

х+2.1=15.2÷4
х+2.1=3.8
х=3.8-2.1
х=1.7