Tom is given the equation 10x+15=20 to solve. He says the solution is 1/2 . Which reason justifies his solution?(1 point) Responses Tom says that to solve the equation you first divide by 10 and then subtract 15. Tom says that to solve the equation you first divide by 10 and then subtract 15. Tom says that to solve the equation you first subtract 15 and then multiply by 10. Tom says that to solve the equation you first subtract 15 and then multiply by 10. Tom says that to solve the equation you first add 15 and then divide by 10. Tom says that to solve the equation you first add 15 and then divide by 10. Tom says that to solve the equation you first subtract 15 and then divide by 10.
Tom's solution is not correct. The equation 10x + 15 = 20 can be solved by first subtracting 15 from both sides and then dividing by 10. Therefore, the correct reasoning would be "Tom says that to solve the equation you first subtract 15 and then divide by 10."
Tom says that to solve the equation you first subtract 15 and then divide by 10.
Based on the equation 10x + 15 = 20, let's explain how Tom might have arrived at the solution of 1/2.
Tom says that to solve the equation, you first subtract 15 and then divide by 10.
1. Start with 10x + 15 = 20.
2. Subtract 15 from both sides of the equation: 10x = 20 - 15 = 5.
3. Divide both sides of the equation by 10: (10x)/10 = 5/10.
4. Simplify: x = 1/2.
So, Tom's reasoning is correct. By subtracting 15 from both sides and then dividing by 10, he arrived at the solution x = 1/2.