How do you simplify #-2[7.5 + (-7.9)]# using order of operations? Prealgebra Intro to Prealgebra What is prealgebra? 1 Answer EZ as pi Jun 11, 2018 #=+0.8# Explanation: #-2[7.5color(blue)(+(-7.9))]" "larr# start with the inner-most brackets #=-2[7.5color(blue)(-7.9)]" "larr# simplify the square brackets #= -2[-0.4]" "larr# multiply #=+0.8# Answer link Related questions How many millimeters are in 1.3 kilometers? How do you evaluate the expression #3x+2y+4+9y# if #x=8#, #y=4#? How do you simplify #7+9times3-25 # using order of operations? How do you simplify #5+ 7(8 รท 4 ) + 6 # using PEMDAS? What is Pre-algebra? Is Pre-Algebra important? How do you write the algebraic expression: the quotient of 15 and y? How do you write 63/40 as a decimal? How do you simplify #3/12 - 1/8#? How do you write #2/5# as decimal? See all questions in What is prealgebra? Impact of this question 3254 views around the world You can reuse this answer Creative Commons License