Question

solve the inequation x-3<=18-2x​

Answer 1

Answer:

x-3<=18-2x

(-3)+(-18)<=(-2x)+(-x)

-21<=-3x

now multiplying both sides by-1

21>=3x

x<=7

Answer 2

Answer:

( -∞ , 7 ]

Step-by-step explanation:

$x - 3 \leqslant 18 - 2x \\ 3x - 21 \leqslant 0 \\ 3x \leqslant 21 \\ x \leqslant \frac{21}{3} \\ x \leqslant 7$

Or x (belongs to), ( -∞ , 7 ]