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3 years ago

Please help 8, 9, and 10 you don't need to explain

Mathematics

2 answers:

DENIUS [597]3 years ago

8 0

Step-by-step explanation:

1/2(x + 24) = 21

1/2x +12 = 21

1/2x = 9

x = 18

28 - 3x - 4 = 2x + 12 + x

24 - 3x = 3x + 12

24 - 6x = 12

-6x = -12

x = 2

10.

3x - 18 + 6 = 5x - 6

3x - 12 = 5x - 6

-2x - 12 = -6

-2x = 6

x = -3

hope it help.

can you answer my question, i can help you in math, can you help me in english? please

9966 [12]3 years ago

5 0

Answer:

8.

4.5

9.

3, 4, 12

3, 3, 12

6, 12

-6, -12

10.

plug in x to check work

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