Question

Tìm x:

a}4/7+x=7/8-1/4

b}x/30=2/5

Answer 1

a) 4/7 + x = 5/8

x=5/8 - 4/7

x=3/56

b) x/30 = 2/5 

x/30=12/30

=>x=12

Answer 2

a) 4/7 + x = 5/8 x=5/8 - 4/7 x=3/56 b) x/30 = 2/5 x/30=12/30 =>x=12

Answer 3

a. 4/7+x=7/8-1/4

    4/7+x=5/8

           x= 5/8-4/7

           x= 3/56

b. x/30=2/5

=> x*5=30*2

    x*5= 60

    x    = 60:5

    x    = 12