Question

решите уравнение:1)7(х-19)=133 2)9(213-2х)=927 3)1344:(х+26)=32 4)384:(51-5х)=24

Answer 1

7 (x-19)=133
7x-133=133
7x=133+133
7x=266
x=266/7
x=38

9 (213-2x)=927

1917-18x=927
18x=1917-927
18x=990
x=990÷18
x=55

1344÷(x+26)=32
x+26=1344÷32
x+26=42
x=42-26
x=16

384÷(51-5x)=24
51-5x=384÷24
51-5x=16
5x=51-16=35
x=35÷5=7