How do you evaluate #(20- 2\cdot 5) + ( 17- 8\div 4) - 7#?

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Answer 1 · 2018-03-08T21:06:55

#5#

there are #3# terms. Simplify each to a single answer.

Within each term do the multiplication and division before the the addition and subtraction:

#(20-color(blue)(2xx5)) + ( color(red)(8div4)) color(green)(" "-7)#

#=(20-color(blue)(10)) + ( color(red)(2)) color(green)(" "-7)#

#=(color(blue)(20-10)) + color(red)(2) color(green)(" "-7)#

#=(color(blue)(10)) + color(red)(2) color(green)(" "-7)#

#=10+2-7#

#=5#