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How do you simplify #125-43+13# using PEMDAS?

Answer 1

Eli Assouline

According to PEMDAS you will first add values so #-43+13=-30# then subtract #125-30=95#

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Answer 2

Julia Adams

#95#

Confusion frequently results from adding and subtracting with positive and negative values.

Keep in mind that a sign before a number only pertains to that particular number.

So #18 - 7 + 5# does NOT mean the same as #18 - (7+5)# The answers for these are #16 and 6#

The commutative law allows us to reorder the numbers in order of our permission, so that's the simplest way to prevent confusion.

Put the additions in the expression's front and the subtraction in its back.

#125 -43 +13# is better understood as:

#125+13 -43#

=#95#

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Answer 3

Eli Assouline

By applying PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right), the simplified result of 125 - 43 + 13 is 95.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.