Question

25a-1.4= -1/2a-3.2

решите уравнение

Answer 1

2/5a-1/4=-1/2-3.2

2/5a-1.4+1/2=-3.2

2/5a+3/4=-3.2

2/5a= -3.2-0.75

2/5a= -3.95

a=-3.95:2/5

a= 9.875