解方程组 4/x/-3/y/=6,/x/+2/y/=7
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解方程组 4/x/-3/y/=6,/x/+2/y/=7
解方程组 4/x/-3/y/=6,/x/+2/y/=7
解方程组 4/x/-3/y/=6,/x/+2/y/=7
4/x/-3/y/=6 (1)
/x/+2/y/=7 (2)
(1)×2+(2)×3得
11|x|=33
∴|x|=3
把|x|=3代入(1)得
|y|=2
∴|x|=3 |y|=2
∴方程组的解是
x=3 x=3 x=-3 x=-3
y=2 y=-2 y=2 y=-2
你好,无解,望采纳
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