Question

Решите уравнение:

1) 3(0,5x-4)+8,5x=18

2) 6/x+6/x+1=5

Answer 1

1) 1,5 х-12 +8,5х=18
1,5х+8,5х - 12=18
10х = 18+12
10х = 30
х=3

2) 12/х +1 = 5
12/х= 5-1
12/х = 4
х= 12÷4
х= 3