Alyssa had 189 dollars to spend on 8 books. after buying them she had 13 dollars. how much did each book cost

x = -87

Step-by-step explanation:

Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS.

PEMDAS is the order of operation and stands for:

Parenthesis

Exponents (& Roots)

Multiplication

Division

Addition

Subtraction

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First, subtract 265 from both sides of the equation:

3x + 265 (-265) = 4 (-265)

3x = 4 - 265

3x = -261

Next, divide 3 from both sides:

(3x)/3 = (-261)/3

x = -261/3

x = -87

x = -87 is your answer.

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