Solving the equation of grade five in primary school The store shipped 400 kg of fruit candy and 240 kg of chocolate. After each sold the same amount, the fruit candy was 4.2 times that of chocolate. How many kg of fruit candy and chocolate do you want to sell?

Let's sell x kg of fruit candy and milk candy respectively
400-x=(240-x)×4.2
400-x=1008-4.2x
4.2x-x=1008-400
3.2x=608
x=190

1）50％（Y-1）=30％（Y+1）+0.1
3-5X X+2
2）——=-----+1
6 4
Y-1 Y-2
3)------ + ———=1-2Y
3 5

50% (Y-1) = 30% (y + 1) + 0.10.5y-0.5 = 0.3y + 0.3 + 0.10.2y = 0.92y = 9y = 4.5 (3-5X) / 6 = (x + 2) / 4 + 12 (3-5X) / 12-3 (x + 2) / 12 = 1 (6-10x-3x-6) / 12 = 1-13x = 12x = - 12 / 13 is 13 / 12 (Y-1) / 3 + (Y-2) / 5 = 1-2y5 (Y-1) 15 + 3 (Y-2) / 15 = 1-2y5y-5 + 3y-6

Data of equation solutions in grade five of primary school

Hello
1. The meaning of equation: the equation with unknowns is called equation
2. The value of the unknowns that make the left and right sides of the equation equal
Solving equations: the process of solving equations is called solving equations
4. Checking calculation: substitute the value of the unknown into the original equation to see whether the value on the left side of the equation is equal to the value on the right side of the equation
5. The steps to solve the problem are as follows: (1) make clear the meaning of the problem, find out the unknown number, and use X to express it; (2) analyze and find out the equal relationship between the quantities, and make the equation; (3) solve the equation; test and write the answer
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Solving the equation of grade five in primary school The store shipped 400 kg of fruit candy and 240 kg of chocolate. After each sold the same amount, the fruit candy was 4.2 times that of chocolate. How many kg of fruit candy and chocolate do you want to sell?