Tom's solution is incorrect. The equation 10x + 15 = 20 can be solved as follows:
Subtract 15 from both sides of the equation:
10x + 15 - 15 = 20 - 15
10x = 5
Divide both sides of the equation by 10:
10x/10 = 5/10
x = 1/2
Therefore, the correct solution to the equation is x = 1/2.
Tom is given the equation 10x+15=20 to solve. He says the solution is 1 over 2. Which reason justifies his solution?
1 answer