+0

# need help the calculator says this is not an equation

0
67
2
+8

how do you solve 5[3-(7-8)]

spizzo33  May 24, 2017
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#1
+815
+2

\(5[3-(7-8)]\) simplifies to 20

An equation must have an equal sign, which \(5[3-(7-8)]\) lacks, so \(5[3-(7-8)]\) is an expressionâ€”not an equation.

Let's evaluate this expression step by step:

 \(5[3-(7-8)]\) This is the original expression. First, simplify what is in the inner parentheses. \(5[3-(-1)]\) Subtracting a negative number is the same as adding a positive \(5[3+1]\) Simplify 3+1 \(5[4]\) Brackets are another way to represent parentheses. A number without an operation directly beside parentheses is always multiplication \(5*4\) Simplify 5*4 \(20\)
TheXSquaredFactor  May 24, 2017
#2
+6765
0

5[3 - (7 - 8)]

Always do stuff in the smallest bracket(parenthese) first.

= 5[3 - (-1)]

= 5(3 + 1) <--- Minus minus equals plus

= 5(4) <--- do stuff in the bracket

= 20 :D

MaxWong  May 25, 2017

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