2(x-3y)+(1/4x+5y)-3(1/4x-y)
问题描述:
2(x-3y)+(1/4x+5y)-3(1/4x-y)
答
2(x-3y)+(1/4x+5y)-3(1/4x-y)
=2x-6y+1/4x+5y-3/4x+3y
=3/2x+2y