Someone please urgently help me with these two short worded questions! Thanks so much

Mathematics

1 answer:

ahrayia [7]3 years ago

8 0

Answer:

6. 7x + 3 = 3x; x = -3/4

7. x - 5 = 3x - 9; x = 2

Step-by-step explanation:

6. 7x + 3 = 3x

Subtract 3x from both sides.

7x + 3 - 3x = 3x - 3x

4x + 3 = 0

Subtract 3 from both sides.

4x + 3 - 3 = 0 - 3

4x = -3

Divide both sides by 4.

x = -3/4

7. x - 5 = 3x - 9

Subtract x from both sides.

x - 5 - x = 3x - 9 - x

-5 = 2x - 9

Add 9 to both sides.

-5 + 9 = 2x - 9 + 9

4 = 2x

Divide both sides by 2.

4/2 = (2/2) x

2 = x

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