Solving Equations in Mathematics of Grade Four in Beijing Primary School
Let the number a be x and the number b be y, then we can know the following equation:
X+Y=984，X÷Y=40
X=984-Y, if substituted in the above formula: (984-Y)÷Y=40, you get 984-Y=40Y, and finally you get 984=4 1Y, Y=24. If substituted in the above formula, you get X=960.