Raspuns:
Explicație pas cu pas:
1/4×x+7/2=13/3
1/4x+7/2=13/3
3x+42=52
3x=52-42
3x=10
x=10/3
________________________
9/2-1/4×x=3/4
9/2-1/4x=3/4
18-x=3
-x=3-18
-x=-15
x=15
1/2×x-1/3×x=7/6
1/2x-1/3x=7/6
3x-2x=7
(3-2)x=7
1x=7
x=7
