Rozwiąsz równania : D
a) 2x+4=3x-8
b) 3(x+15)=x+7
2x-3x=-8-4
-x=-12|:(-1)
x=12
3x+45=x+7
3x-x=7-45
2x=-38|:2
x=-19
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a) 2x+4=3x-8
2x-3x=-8-4
-x=-12|:(-1)
x=12
b) 3(x+15)=x+7
3x+45=x+7
3x-x=7-45
2x=-38|:2
x=-19