How do you simplify #9xx10+80-78-+17xx7# using the order of operations?

Answer 1

The answer is #-27#.

Follow the order of operations as given in the acronym PEMDAS.

#color(red)"P:"# parentheses or brackets #color(blue)"E:"# exponents or powers #color(green)"M:"# multiplication #color(green)"D:"# division #color(purple)"A:"# addition #color(purple)"S:"# subtraction

(M and D have equal weight and are calculated from left to right.)

(A and S have equal weight and are calculated from left to right.

Given:

#9xx10+80-78-+17xx7#

A negative and a positive make a negative.

#9xx10+80-78-17xx7#

Carry out the multiplications first.

#90+80-78-119#

Carry out the addition and subtraction from left to right.

#170-78-119#
#92-119#
#-27#
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Answer 2

To simplify the expression 9x×10 + 80 - 78 ÷ 17×7 using the order of operations (PEMDAS/BODMAS), you first perform any multiplication and division from left to right, then addition and subtraction from left to right.

  1. 9x × 10 = 90x
  2. 78 ÷ 17 ≈ 4.588 (rounded to three decimal places)
  3. Multiply the result of step 2 by 7: 4.588 × 7 ≈ 32.116 (rounded to three decimal places)

Now, rewrite the expression with the simplified values:

90x + 80 - 32.116

Then, you perform addition and subtraction:

90x + 80 - 32.116 ≈ 90x + 47.884

So, the simplified expression is 90x + 47.884.

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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.

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.

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.

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.

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