解方程y-[3y-1]等于5【y+2]
问题描述:
解方程y-[3y-1]等于5【y+2]
答
o.3y-1.5=y+2
0.3y-y=2+1.5
-0.7y=3.5
y=3.5÷(-0.7)
y= -5
答
y-3y+1=5y+10
-2y-5y=10-1
-7y=9
y=-9/7
答
y-(3y-1)=5(y+2)
y-3y+1=5y+10
-2y=5y+9
-9=7y
y=负七分之九
答
y-3y+1=5y+10
-2y+1=5y+10
-7y=9
y=-7/9
答
y-[3y-1]=5【y+2]
y-3y+1=5y+10
3y=-9
y=-3