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

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

3. Solve the equation for x: 3x - 4 = 7x + 8-example-1
User Giltay
by
8.0k points

2 Answers

5 votes

Answer:

B) x = -3

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.

User Sidney De Moraes
by
7.2k points
1 vote

Answer:

=−3

Explanation:

User Marko Stojkovic
by
8.6k points
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