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a fost răspuns

Rezolvati in multimea numerelor rationale ecuatiile:

a) 2(x-24)+113=3(15-x)

b) 4(5x-7)+21=3(6x-11)

Răspuns :

Adutza80
A} 2x-48+133=55-3x
2x+85=55-3x
85-55=3x+2x
30=5x
X=6
B} 20x-28+21=18x-33
20x-7=18x-33
20x-18x=-33+7
2x=-26
X=-13

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