Răspunsuri

2014-11-12T10:21:46+02:00
A)7x-3x=8-4
4x=4
x=1
B)13x-3x=2+18
10x=20
x=2
2014-11-12T10:22:51+02:00
7x-3x=8-4
4x=4
x=4:4
x=1

13x-3x=18+2
10x=20
x=20:10
x=2