2x+3y=1,当取何值时,-2≤y≤5,求x的值

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2x+3y=1,当取何值时,-2≤y≤5,求x的值

2x+3y=1,当取何值时,-2≤y≤5,求x的值
2x+3y=1,当取何值时,-2≤y≤5,求x的值

2x+3y=1,当取何值时,-2≤y≤5,求x的值
2x + 3y = 1
3y = 1 - 2x
-2 ≤ y ≤ 5
-6 ≤ 3y ≤ 15
-6 ≤ 1 - 2x ≤ 15
-7 ≤ x ≤ 7/2

2.5小于等于x大于等于-8