Question

Решите уравнение: 1) 87 :(4х+5)=3

Answer 1

87=3*(4х+5)
87=12х+15
12х=87-15
12х=72
х=6

Answer 2

печалька

Answer 3

4х+5=87:3
4х+5=29
4х=29-5
х=24:4
х=6