Question

Solve for x: 5x+7=3x−9.

Answer 1

To solve for x in the given equation;

`5x+7=3x-9`

We start by collecting like terms, as follows;

`5x-3x=-9-7`

When a number crosses the sign of equality, the sign in front of it switches. Positive numbers becomes negative, and vice versa.

We would now have;

`\begin{gathered} 5x-3x=-9-7 \\ 2x=-16 \\ \text{Divide both sides by 2;} \\ (2x)/(2)=(-16)/(2) \\ x=-8 \end{gathered}`

ANSWER:

The answer is x = -8