Question

一道解方程，要过程，详细的

x/45+(x+12)/40+1.5=3.5

速度快呀，赶着写作业

Answer 1

x/45+(x+12)/40+1.5=3.5
x/45+(x+12)/40=2
两边同时乘以360，得
8x+9(x+12)=720
8x+9x+108=720
17x=612
x=36

Answer 2

x/45+(x+12)/40+1.5=3.5
解：8x+9（x+12)+540=1260
8x+9x+108+540=1260
17x=612
x=36

Answer 3

x/45+x/40+12/40=3.5-1.5
(8+9)x/360=(80-12)/40
17x=360*68/40
x=4

Answer 4

X/45+(X+12)/40=2
X/9+(X+12)/8=10
8X/72+(9X+108)/72=10
17X+108=720
17X=612
X=36

Answer 5

x/45+(x+12)/40=2
8x+9(x+12)=720
17x+108=720
17x=612
x=36

Answer 6

8/9x+x+12+60=140
17/9x=68
x=36