Question

Rezolvati in multimea q ecuatiile
a) 2(x-1)-5=3(x+2)-2x
b) |3x-2|=4 | (este semnul modulului)

Answer 1

a) 2x-2-5=3x+6-2x
2x-7=x+6
2x-x=6+7
x=13

b) 3x-2=4 sau 3x-2=-4
1) 3x-2=4
3x=4+2
3x=6
x=6/3=2

2) 3x-2=-4
3x=-4+2
3x=-2
x=-2/3