Question

Aflati x din:
a)x+1/3=4/7;
b)6/7=x-1/3;
c)x+3/8=10/16;
d)4,5/4=9/x+1

Answer 1

a) x=4/7-1/3
    x=/12-7/21
    x=5/21
b)6=7(x-1/3)
    6=7x-7/3
    -7x=-7/3-6
    -7x=-/7+18/3
    -7x=-25/3
    x=25/21
c) x+3/8=10/16
    x+3/8=5/8
    x=5/8-3/8
    x=/5-3/8
    x=2/8
    x=1/4
d) 1.125=9/x+1, x≠0
    -9/x=1-1.125
    -9/x=-0.125
    -9=-0.125x
    -0.125x=-9
     x=72, x≠0
     x=72