Question #1d80c

2 Answers

Answer:

paranthesis first :)

Explanation:

#(7-5)*3 =># first #(7-5) =2# then multiplication #2*3=6#

#18-5+3# from left to right #18-5 = 13+3 = 16#

#(19+4)-8 / 2# first #(19+4)# then #(8/2)# and finally subtraction

#23 - 8/2 = 23-4 = 19#

Sep 20, 2016

Answer:

#6, 16, 19#

Explanation:

Count the number of terms in each expression first.

IN each term, do brackets first,
then multiply and divide
last add and subtract

#" "color(red)((7-5)) xx 3" "larr# all one term. Brackets first
=#" "color(red)(2) xx 3#
=#color(white)(xxxx)6#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

#18-5 +3" "larr# there are 3 terms

Work left to right

#= 13 +3 = 16#

OR re-arrange the terms with the subtract at the end.

NOTE!! only 5 is being subtracted!! Do not add 5+3!

#18+3-5 = 16#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
#color(red)((9+14))color(blue)(-8div2)" "larr# there are 2 terms - get two answers

=#color(white)(xxxl)color(red)(23)color(blue)(-4)" "# do 2 calculations, one in each term.

=#" "19#
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~