Question

Solve the equation for x. -8x + 5x - 9 = 6A) x = -5 B) x = -1C) x = 3 D) x = 5

Answer 1

A) x=-5

Explanation

$-8x+5x-9=6$

Step 1

add like terms

$\begin{gathered} -8x+5x-9=6 \\ -3x-9=6 \end{gathered}$

Step 2

now, add 9 in both sides. (If two expressions are equal to each other, and you add the same value to both sides of the equation, the equation will remain equal.)

$\begin{gathered} -3x-9=6 \\ \text{add 9 in both sides} \\ -3x-9+9=6+9 \\ -3x=15 \end{gathered}$

Step 3

finally, divide both sides by -3

$\begin{gathered} -3x=15 \\ \text{divide by -3} \\ \frac{-3x}{-3}=\frac{15}{-3} \\ x=-5 \end{gathered}$

so, the answer is A) x=-5

I hope this helps you