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3 years ago

3. Solve the equation for x: 3x - 4 = 7x + 8

Mathematics

2 answers:

Dennis_Churaev [7]3 years ago

8 0

Answer:

=−3

Step-by-step explanation:

liberstina [14]3 years ago

5 0

Answer:

B) x = -3

Step-by-step explanation:

3x - 4 = 7x + 8.

Subtract 7 from 3

3 - 7 = -4

-4x - 4 = 8

use additive inverses.

-4x - 4 + 4 = 8 + 4

8 + 4 = 12.

-4x ÷ -4 = 12 ÷ -4

x = -3.

Hope this helped.

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