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Cel mai inteligent răspuns!
2014-11-12T16:02:41+02:00
1)2x+7x+7+5=18+3x+6
9x+12=3x+24
9x=3x+12
3x=12
x=4
2)10x+5=125
10x=120
x=12
3)2x+2+3x+6+4x+5=40
9x+13=40
9x=27
x=3
4)15x=10x+25
5x=25
x=5
5)7x+3x-6+6=x+36
10x=x+36
9x=36
x=4
6)nu imi da . Cred ca ai gresit!!!