Răspunsuri

2014-10-02T17:42:50+03:00
A) 7x-3+x=2
7x+x=2+3
8x=5
x=5/8

b) 5x-1=3
5x=3+1
5x=4
x=4/5

c) 7-2x+x=4
7-4=2x-x
3=3x
x=3:3
x=1
1 5 1