WAEC - Mathematics (2010 - No. 11)
Solve the inequality: 3(x + 1) \(\leq\) 5(x + 2) + 15
x \(\geq\) -14
x \(\leq\) - 14
x \(\geq\) -11
x \(\leq\) - 11
Giải thích
3(x + 1) \(\leq\) 5(x + 2) + 15
3x + 3 \(\leq\) 5x + 10 + 15
3x - 5x \(\leq\) 10 + 15 - 3
-2x \(\leq\) 22
x \(\geq\) \(\frac{-22}{2}\)
x \(\geq\) -11
3x + 3 \(\leq\) 5x + 10 + 15
3x - 5x \(\leq\) 10 + 15 - 3
-2x \(\leq\) 22
x \(\geq\) \(\frac{-22}{2}\)
x \(\geq\) -11