Answer: the number must be placed in the box is 9
suppose: the number must be placed in the box is x
have:
5u + 3(4u - 6) = -3u -27 + 20u + x
⇔ 5u + 12u - 18 = -3u - 27 + 20u +x
⇔ 17u + 3u - 20u = -27 + 18 + x
⇔ 0 = x - 9
⇔ x = 9
Step-by-step explanation:
Answer:
Do it on standard form
Step-by-step explanation:
Doing it by standard form ensures simplifying
Answer:
1x-1y
Step-by-step explanation:
<span>The quotient of 6 times a number and 16 is </span>6x / 16
