How do you simplify #3+(21div7)times 8div 4#?

1 Answer
Apr 23, 2017

Answer:

#3+6=9#

Explanation:

There are 2 terms. You have to simplify the second term to a final answer before adding it to #3#.

#3+color(red)((21div7))xx8div4#

You have to calculate the parentheses first!

#= 3+color(red)(3)xx8div4#

Multiplication and division have the same priority, so it does not matter which is done first. This can be written as:

#3+ color(blue)((3xx8)/4 = color(black)(3+)24/4 = color(black)(3)+6 = 9)#

OR

#3+color(green)( (3xx8)/4 = color(black)(3+) (3xxcancel8^2)/cancel4 = color(black)(3+)6 = 9)#