How do you simplify #2(42 – 3) – 7# using order of operations?

2 Answers
Mar 19, 2018

Answer:

71

Explanation:

BIDMAS/PEMDAS

Do brackets first

#42-3 = 39#

Then Multiplication

#2*39 = 78#

then finally subtraction

#78-7=71#

Hopefully this helped

Mar 19, 2018

Answer:

#71#

Explanation:

There are two terms. Simplify each to a single answer which can be added and subtracted in the last step.

In each term - do the brackets first and then the multiplication and division.

#color(blue)(2(42-3))" "color(green)(-" "7)#
#color(white)(xxx)darr#
#=color(blue)(2(39))" "color(green)(-" "7)#
#color(white)(.xx)darr#
#= color(blue)(78)" "color(green)(-" "7)#

#=71#