{5X-6y=15 {5X+y=3这个方程组怎么解啊?
问题描述:
{5X-6y=15 {5X+y=3这个方程组怎么解啊?
答
{5X-6y=15
{5X+y=3
7y=3-15
7y=-12
y=-12/7
x=(3+12/7)÷5=33/35
x=33/35
y=-12/7