x+(x+20)+(x-10)+70+x=540 .

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/24 04:05:59
x+(x+20)+(x-10)+70+x=540 .
x)֨62~BNms [S="}BJ l2ȅԮJeM*- @\(ԵL̐@fkhhj_\gu |{ft>f#PY 50m5bt

x+(x+20)+(x-10)+70+x=540 .
x+(x+20)+(x-10)+70+x=540 .

x+(x+20)+(x-10)+70+x=540 .
70+(x+20)+(x-10)+x+x=540
4x+80=540
4x=540-80
4x=460
4x=460÷4
x=115

答:
x+(x+20)+(x-10)+70+x=540
4x+20-10+70=540
4x+80=540
4x=460
x=115