Question

2(x+3)-5=x-7 repedeee

Answer 1

Răspuns:

2•x+2•3=x-7

2•x+7=x-7

2•x-x=-7-7

x=-14

Answer 2

Răspuns:

x=-8

Explicație:

2(x+3)-5=x-7

2x+6-5=x-7

2x+6=x-7+5

2x+6=x-2

2x=x-2-6=> 2x=x-8

                 x=-8 si inlocuim

2(-8+3)-5=-8-7

-16+6-5=-15

-10-5=-15

-15=-15