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3(2x+1)-10= 2(x-3)+11

Răspuns :

3(2x+1)-10=2(x-3)+11
6x+3-10=2x-6+11
6x-7=2x+5
6x-2x=7+5
4x=12
x=12:4
x=3
6×+3-10=2×-6+11
6×-2×=-6+11-3+10
4×=12
×=12÷4
×=3