We began by multiplying both sides of the equation by 4, which can be justified by the Multiplication Property of Equality.
& b. 4(8-3x/4)=4(32)
& b. Multiplication Property of Equality
Here, we multiplied. This means that we are substituting equivalent values. For instance, because 4(32) = 128, we can replace 4(32) with 128. Therefore, the property that justifies this step is the Substitution Property of Equality.
& c. 8-3x=128
& c. Substitution Property of Equality
We subtracted 8 from both sides of the equation and simplified the obtained equation. Therefore, the property that justifies this step is the Subtraction Property of Equality.
& d. - 3x=120
& d. Subtraction Property of Equality
By dividing each side of the equation by -3, we found the value of x. The property that justifies this step is the Division Property of Equality.
& e. x=-40
& e. Division Property of Equality
