①2×5分之24-6y+5y=24
2×24/5-6y+5y=24
48/5-y=24
-y=24-48/5
-y=(120-48)/5
-y=72/5
y=-72/5
y=-14.4
代入方程
左边=2*24/5-6*(-72/5)+5*(-72/5)=48/5+72/5=24与右边相等
②2×6分之39-3y+4y=37
2×39/6+y=37
y=37-13
y=24
代入到方程
左边=2*39/6-3*24+4*24=13+24=37与右边相等
①2×5分之24-6y+5y=24
2×24/5-6y+5y=24
48/5-y=24
-y=24-48/5
-y=(120-48)/5
-y=72/5
y=-72/5
y=-14.4
代入方程
左边=2*24/5-6*(-72/5)+5*(-72/5)=48/5+72/5=24与右边相等
②2×6分之39-3y+4y=37
2×39/6+y=37
y=37-13
y=24
代入到方程
左边=2*39/6-3*24+4*24=13+24=37与右边相等