Вопрос школьника по предмету Математика
Решите уравнение:
A)-6*(х+9)=0
Б)-4*(5х+1)=5*(4-3х)
помогите
Ответ учителя по предмету Математика
A)-6*(х+9)=0
-6x-54=0
-6x=0+54
x=54/(-6)
x=-9
Б)-4*(5х+1)=5*(4-3х)
-20x-4=20-15x
-20x+15x=20+4
-5x=24
x=24/(-5)
x=-4.8
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