are the expression -7 + -2 and -7 - 2 equivalent why or why not? include the solutions for each expression for full credit

Yes, they are both equal.

Step-by-step explanation:

This is because in both cases, you are subtracting, -7 + -2 = -9. -7 - 2 = -9.

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step-by-step explanation:

because i said it is

answer:   expression= p+p*d%

price reduction + sale price = $625

sale price: $p+$p*d%

where d% is the percentage of discount

step-by-step explanation:

original price = p

price went down by $150 price reduction $p*d%

sale price= $ 475

therefore the price before sale is: $625

and the expression that shows the price before sale is: p+p*d%