3x+9=27怎么检验?

2024-12-30 09:04:22
推荐回答(2个)
回答1:

解:解方程,此方程的解为x = 6
3x + 9 = 27

3x = 27 - 9
3x = 18
x = 18 ÷ 3
x = 18 × 1/3
x = 18/3
∴x = 6
经检验,3 × 6 + 9 = 27符合题意
答:此方程的解为x = 6

回答2:

82935+5826