5x+2(40-x)=95

2025-06-26 05:20:19
推荐回答(1个)
回答1:

解:解方程, 此方程的解为x = 5
5x + 2(40 - x) = 95

5x + 2 × 40 - 2 × x = 95
5x + 80 - 2x = 95
5x - 2x = 95 - 80
3x = 15
x = 15 ÷ 3
x = 15 × 1/3
x = 15/3
∴x = 5
答:此方程的解为x = 5