warriorfish warriorfish

15-10-2018
Mathematics

contestada

The answer key says the solution is -66 and I cannot figure out how that’s possible.

The answer key says the solution is 66 and I cannot figure out how thats possible class=

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tramserran tramserran

15-10-2018

Answer: -66

Step-by-step explanation:

use PEMDAS. Evaluate the parentheses, then multiplication, then addition.

-3[-3(-4 - 1) - (-3 - 4)]

↓ ↓

-3[-3( -5 ) - ( -7 )]

↓ ↓

-3[ 15 + 7 ]

↓

-3[ 22 ]

↓

-66

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