Вопрос школьника по предмету Математика
Помогите решить
а)-2x+12=5x-16
в)-6(2x+1)=12x+2(x+36
Ответ учителя по предмету Математика
а)
-2x+12=5x-16
-2x-5x=-16-12
7x=28
x=28:7
x=4
в
-6(2x+1)=12x+2(x+36)
-12x-6=12x+2x+72
-12x-6=14x+72
-12x-14x=72+6
-26x=78
x=-78:26
x= -3
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