$2.39 * 2 (jars of peanut butter) = $ 4.78. $4.78 - $1 (discount because of the coupon when buying 2 jars of peanut butter) is equal to $3.78. Therefore, the final price of the two jars is $ 3.78.
To simply put -
($2.39 * 2) - $1 = $3.78
Use PEMDAS:
Parentheses
Exponents
Multiply and Divide from left to right.
Add and Subtract from left to right.
-------------------------------------------------------
Evaluate the exponents.
2^2+4^2/2^2
Divide from left to right.
4 + 16/4
Add from left to right.
4 + 4
Solution.
8
Let the number be x.
8 - x = x -34
2x = 8 + 34
2x = 42
x = 21
Answer: The number is 21.
