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3(x + 18)- 24= x- 18​

Răspuns :

Răspuns:

3x+54-24=x-18

3x+30=x-18

3x-x=-18-30

2x=-48

x=-24

Explicație pas cu pas:

[tex]\bf 3\cdot(x + 18)- 24=x-18\\\\3x+54-24=x-18\\\\3x+30=x-18\\\\3x-x+30=-18\\\\2x=-18-30\\\\2x=-48\:\:\:|:2\\\\\boxed{\bf x=-24}[/tex]