(2x+2.5)x4.2=15.54 用方程解

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/25 00:21:55
(2x+2.5)x4.2=15.54用方程解(2x+2.5)x4.2=15.54用方程解(2x+2.5)x4.2=15.54用方程解(2x+2.5)x4.2=15.542x+2.5=15.54÷4.2

(2x+2.5)x4.2=15.54 用方程解
(2x+2.5)x4.2=15.54 用方程解

(2x+2.5)x4.2=15.54 用方程解
(2x+2.5)x4.2=15.54
2x+2.5=15.54 ÷4.2
2x+2.5=3.7
2x=1.2
x=0.6

2x=1.2
x=0.6

(2x+2.5)x4.2=15.54
2x+2.5=15.54 ÷4.2
2x+2.5=3.7
2x=1.2
x=0.6

(2x+2.5)x4.2=15.54
8.4x+2.5乘4.2=15.54
8.4x+10.5=15.54
8.4x=15.54-10.5
8.4x=5.04
x=5.04除以8.4
x=0.6