甲数是多少
8 × 13 = 8 - 13
⋯⋯
设甲数为 x(乙数也为 x)。列方程得
1 x + 1 x + x + x + 1 = 100
2 4
3
2 4 x = 100 − 1
3
2 4 x = 99
x = 99÷2 3
4
x = 36
8 × 13 = 8 - 13
⋯⋯
设甲数为 x(乙数也为 x)。列方程得
1 x + 1 x + x + x + 1 = 100
2 4
3
2 4 x = 100 − 1
3
2 4 x = 99
x = 99÷2 3
4
x = 36