Question

Решите линейное уравнение:
1/3х=12

2/3у=9

-4х=1/7

5у=-5/8

Answer 1

1/3x=12
x=12:1/3
x=12*3/1
x=36

2/3x=9
x=9:2/3
x=9/1*3/2
x=27/2
x=13 1/2

-4x=1/7
x=1/7*(-1/4)
x=-1/28

5y=-5/8
y=(-5/8)*1/5
y=-5/40
y=-1/8