How do you simplify #11 - 4* (-7)#?

2 Answers
Don't Memorise
Apr 7, 2015

When we see an expression like this, we follow the correct order of operations:

Parentheses>Exponents>Multiplication and Division>Addition and Subtraction (PEMDAS)

#color(blue)(11-4*(-7)#

# = 11 - (-28) # (We performed the Multiplication first)

# = 11 +28# (And then the Subtraction of #-28# from #11#)

#color(blue) (= 39#

Alan P.
Apr 7, 2015

Multiplication is done before addition or subtraction so
do the multiplication first
#4*(-7) = (-28)#
and therefore
#11-4*(-7)#
# = 11- (-28)#
#= 11+28#
#= 39#

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