x+ 18 = 50 7x = 4.2 18 = y-7.5

75-5x=57 x÷4=4.8 y+5y=96

5x+8x = 260 x÷3 = 4.6+5.6 5x+ 15 = 65

1.2x = 48 0.5x-4 = 22m ÷0.7= 1.2

Solving application problems with two equations.

1, the coal yard shipped 1.5 tons of coal in the morning, and there was still some in the afternoon. One day, * * * shipped 4.3 tons of coal, how many tons in the afternoon?

2. The sum of three consecutive odd numbers is 57, and the middle number is m. Can you make an equation to find the value of m?

It takes 4 hours for a ship to reach its destination from Port A to Port B.. It is known that the waterway between the two ports is128km long. How many kilometers does this ship travel per hour?

In the shooting competition, Xiaoming hit 3 1, five less than Xiaoli's twice. How many did Xiaoli hit?

Dad is 32 years old, five years older than his son. How old is his son?

6. A transport team carries a batch of goods, 60 tons per day, which can be completed in 20 days. If you transport 15 tons every day, how many days can it be completed?

7. A rectangular henhouse surrounded by a fence, with one side against the wall. The total length of the fence is 2 1 m. How wide is the chicken coop?