Tom is given the equation 10x+15=20 to solve. He says the solution is 1 over 2. Which reason justifies his solution?
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 add 15 and then divide by 10.
Tom says that to solve the equation you first subtract 15 and then divide by 10.
2 answers
The correct reason for Tom's solution is: Tom says that to solve the equation you first subtract 15 and then divide by 10.
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