Exercises of solving mathematical equations in the last semester in the fifth grade of People's Education Press.

First, solve the equation.

48-3 x = 16 5 x×(5+ 1)= 60 99 x = 100-x

36÷x = 18 x÷6 = 12 56-2 x = 20

4y+2=6 x+32=76 3x+6= 18

16+8x=40 2x-8=8 4x-3×9=29

54-X=24 7X=49 126÷X=42

8x-3x = 105 2(x+3)= 10 12x-9x = 9

56x-50x = 30 5x = 15(x-5)78-5x = 28

23y÷23 = 234x-20 = 0 80y+20 = 100-20y

2 53x-90 = 16 2x+9x = 1 1 12(y- 1)= 24 80÷5x = 100 7x÷8 = 6 65x+35 = 100

19y+y = 40 25-5x = 15 79y+y = 80

42x+28x = 140 3x- 1 = 8-2x 90y-90 = 90-90y

80y-90 = 70÷30 78y+2y = 160 88-4x = 80-2x 9÷(4x)= 1 20x = 40– 10x 65y-30 = 100

2. The quantitative relationship is expressed by the equation:

1. The train speed120km, the car speed is 1km, the train is 6km faster than the car. _________

2. The number of boys is less than that of girls 16, with 56 boys and x girls. _____________________

3. Apple tree and pear tree ***38, apple tree X, pear tree 15. ___________________

4, a number minus 43, the difference is 28, _ _ _ _ _ _ _ _ _ 5, the product of a number and 5 is 125, _ _ _ _ _ _ _ _ _ _ _.

6, 3.3 times x minus the product of 1.2 and 4, the difference is 1 1.4, _ _ _ _ _ _ _ _ _ _ _ _.