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2014-11-11T21:41:07+02:00
a).6x+10=46
x=46-10
6x=36x=36/6=6
b).15-x=9      c).2x-31=5-x=9-15             2x=5+31=36
⇒x=36/2=18
-x=-6
x=6
2 4 2
2014-11-11T21:41:50+02:00
6x+10=46
6x=36
x=6

15-x=9
x=15-9
x=6

2x-31=5
2x=36
x=18