Question

Write and solve an equation to find the value of the number (x).

a. 8x−20=x+15
b. 20x−8=15+x
c. 15x+8=20−x
d. 8x−15=x+20

Answer 1

To solve the equation 8x - 20 = x + 15, combine like terms, isolate the variable, and solve for x, resulting in x = 5.

Step-by-step explanation:

To solve the equation 8x - 20 = x + 15, you can begin by combining the like terms on each side of the equation. Subtracting x from both sides gives 7x - 20 = 15. Next, add 20 to both sides to isolate the variable. This gives 7x = 35. Finally, divide both sides by 7 to solve for x, resulting in x = 5.