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5(2x-3) + 4(4x+7)- 48 = 3(2x+1) +4(x+3) + 30

Răspuns :

10x-15+16x+28-48=6x+3+4x+12+30
26x-35=10x+45
26x-10x=45+35
16x=80
x=80/16
x=5