X+8=88-X怎么算

问题描述:

X+8=88-X怎么算

x+8=88-x
移同类项
x+x=88-8
合并同类项
2x=80
约分得:
x=40

2x=80,x=40

2X=80
X=40

2X=80
X=40

x+8=88-x
x+x=88-8
2x=80
x=40

=40

40.这不是口算算的吗