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3x + 5 = -x - 7 Equations with Rational Numbers

2 Answers

4 votes

Answer:

x = -3

Explanation:

3x + 5 = -x - 7

add x to both sides

4x + 5 = - 7

subtract 5 from both sides

4x = - 12

divide 4 from both sides

x = -3

User Foret
by
5.0k points
4 votes
How to solve your question

3x + 5 = -x -7

Solve

1

Subtract 5 from both sides of the equation

3x + 5 = -x - 7

3x + 5-5 = -x -7-5

Simplify

O Subtract the numbers

Subtract the numbers

3x = -x - 12

Add x to both sides of the equation

3x = -x - 12

3x + x = -x 12+ x

Simplify

Combine like terms

o Combine like terms

4x = -12

Divide both sides of the equation by the same tem

4x = -12

4x 4 = -12 4

Simplify

O Cancel terms that are in both the numerator and

denominator

O Divide the numbers

X=-3

Solution

X=-3

User Nandin
by
4.8k points