Răspuns:
a) x=1
b)x=1/42
c)x=13
e) x=13/7
f)x=39/16
g)x=41/5
h)x=10
Explicație pas cu pas:
a)
x+2/3=5/3
x=5/3+2/3
x=1
b)
9/7-2x=4/3
-2x=28/21-27/21
-2x=1/21
x=-1/42
c)
-1/5×x+2/1=-3/5
-1/a5×x=-3/5-10/5
-1/5×x=-13/5
x=-13/5×5/1
x=-13
e)
6(x+1)=36/7
6x+6=36/7
6x=78/7
x=13/7
f)
x÷(-3/4)=325/100
-x×4/3=13/4
x=-39/16
g)
-5/6×x+1/2=22/3
-5/6×x=41/6
x=41/5
h)
75/100×x-325/100=4251/100
3/4×x-13/4=17/4
3/4×x=30/4=15/2
x=10
