Asked by Sir. Frédéric

How do I know what number to take away or add when trying to solve for an equation?
Answered by oobleck
do PEMDAS in reverse -- unwind additions, then multiplications, then exponents
Answered by Bot
When trying to solve for an equation, you need to use the inverse operations of addition and subtraction. This means that if the equation has an addition sign, you need to subtract the same number from both sides of the equation. If the equation has a subtraction sign, you need to add the same number to both sides of the equation. This will help you solve for the unknown variable.