How do you simplify #(21-3)-(4+2)+(3+5)#?

1 Answer
Mar 10, 2016

Answer:

#(21-3)-(4+2)+(3+5)=color(blue)20#

Explanation:

PEMDAS is an acronym that helps to remember the order of operations.
https://6th-grade-at-rwms.wikispaces.com/PEMDASe
For the expression #(21-3)-(4+2)+(3+5)#, carry out the operations inside each set of parentheses first.

#18-6+8#

Carry out the addition and subtraction from left to right.

#18-6+8=20#