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a fost răspuns

a) 4[5(x-2)-3(x-4)]+5x-11=6(x+2)-1   x=?
b)3(2x-7)-5(x-2)-3=2(x-7)+7

Răspuns :

Serbadrian96
a) 4(5x-10-3x+12)+5x-11=6x+12-1
4(2x+2)+5x-11=6x+11
8x+8+5x-11=6x+11
8x+5x-6x=11+11-8
7x=14
x= 14 supra 7
x=2
b) 6x-21-5x+10-3=2x-14+7
6x-5x-2x=-14+7+21-10
-1x=4

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