JAMB - Mathematics (1988 - No. 31)
List the integral values of x which satisfy the inequality -1 < 5 - 2x \(\geq\) 7
-1, 0, 1, 2
0, 1, 2, 3
-0, 1, 2, 3
-1, 0, 2, 3
Giải thích
-1 < 5 - 2x \(\geq\) 7 = -1 < 5 -2x and 5 - 2x \(\leq\) 7
= 2x < 5 + 1 and 5 - 7 \(\leq\) 2x = x < 3 and -1 \(\leq\) x
Integral value of x are -1, 0, 1, 2
= 2x < 5 + 1 and 5 - 7 \(\leq\) 2x = x < 3 and -1 \(\leq\) x
Integral value of x are -1, 0, 1, 2