The expression we have is:
To solve this equation for x, we need to leave the x alone on one side of the equation. The steps to solve are:
Step 1. To leave the term with the x alone on the left side, we need to subtract 18 to both sides of the equation:
As you can see 18-18 is equal to 0, so on the left side we will only have the term -7x:
and on the right side -20.5-18 is equal to -38.5:
Step 2. Divide both sides of the equation by -7 in order to only have "x" on the left side:
On the left side, the -7 on the numerator and denominator cancel each other:
And on the right side, since we are dividing two negative numbers, the result will be a positive number. Also, the result of the division is 5.5, so:
Answer:
What is the value of x? 5.5