(5y+40)/3+(y-1)/4=2-(5y-5)/12解方程
问题描述:
(5y+40)/3+(y-1)/4=2-(5y-5)/12解方程
答
等式左右两边同时乘以12
4*(5y+40)+5*(y-1)=24-(5y-5)
20y+160+5y-5=24-5y+5
25y+155=29-5y
30y=-126
y=-4.2
答
方程两边都乘以12,得:
4(5Y+40)+3(Y-1)=24-(5Y-5)
20Y+160+3Y-3=24-5Y-5
28Y=-138
Y=-69/14