Order+of+Operations

First, you do what is in the parenthisis first, or if there is no parenthisis you follow PEMDAS. P-parenthisis E-exponents M-multiplication or division D-division or multiplication A-addition or subtraction S-subraction or addiction
 * Definition/Summary/How To/Steps**
 * Easy Problems 4+9x(1+3)= 2x9-(20-12)**


 * Medium Problems 24-10x(4+3)=**


 * Hard Problems**


 * Pictures**


 * Videos**