x+(x-80)+二分之x-3=416怎么解?
问题描述:
x+(x-80)+二分之x-3=416怎么解?
答
x+(x-80)+(x-3)/2=416
x+x-80+(x-3)/2=416
2x+(x-3)/2=416+80
2x+(x-3)/2=496
2*2x+2*(x-3)/2=2*496
4x+x-3=992
5x=992+3
5x=995
x=199