Question

x/2=5/7

3x+1/3=4x-5/5

1-3x/5x+2=1/2

(2 mũ x-1) (1/3x=5/4)=0

Answer 1

a, x=2.5:7=10/7

b, 3x+1/3=4x-1

3x+1/3-4x+1=0

-x+4/3=0

-x=-4/3

x=4/3

Answer 2

c, 2-6x=5x+2

2-6x-5x-2=0

-11x=0

x=0

d, ????????