1⼀4(x+90-42)=x-18 如何解

1/4(x+90-42)=x-18
2024-12-01 00:40:39
推荐回答(2个)
回答1:

1/4(x+90-42)=x-18
解:x+90-42=4x-72
x+48=4x-72
3x=120
x=40

回答2:

1/4x+12=x-18
-3/4x=-30
x=40