Реши уравнения
136n-(36n+90n) = 20
2x+3 = 11
12x*14 = 10
16-3x = 1
27-(6x = 2x) = 3

136n-(36n+90n)=20
10n=20
n=20/10
n=2

2х+3=11
2х=11-3
2х=8
х=8/2
х=4

12х-14=10
12х=14+10
12х=24
х=24/12
х=2

16-3х=1
3х=16-1
3х=15
х=15/3
х=5

27-(6х+2х)=3
27-8х=3
8х=27-3
8х=24
х=24/8
х=3

136n-(36n+90n)=20
136n-126n=20
10n=20
n= 20:10
n=2
_____________
2x+3=11
2x=11-3
2x=8
x=8:2
x=4
______________
16-3x=1
3x=16-1
3x=15
x=15:3
x=5
_______________