What number must be placed in the box in the equation below to produce an equation that has more than one solution: 5u+3(4u-6)=-

Question

3 years ago

12

3u-27+20u+ ▢

1 answer:

Sergeeva-Olga [200] · Answer 1 · 2022-03-18T01:19:58+03:00

7 0

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: