Question

Calculează:
6(x+3)-7(x+5)=4(x+1)-2(x+6)+12

Answer 1

6x+18-7x-35=4x+4-2x-12+12
-x-17=2x+4
-x-2x= 4+17
-3x= 21
-x= 21:3
-x= 7
x= -7

Cred ca asa trebuie facut!

Answer 2

6(x+3)-7(x+5)=4(x+1)-2(x+6)+12
6x+18-7x-35=4x+4-2x-12+12
-x-17=2x+4
-3x=4+17
-3x=21
3x=-21
x=-21/3
x=-7