How do you simplify $9 \times 10 + 80 - 78 - + 17 \times 7$ $9xx10+80-78-+17xx7$ using the order of operations?

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How do you simplify $9 \times 10 + 80 - 78 - + 17 \times 7$ $9xx10+80-78-+17xx7$ using the order of operations?

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Answer 1 · 2017-02-22T02:39:01

The answer is $- 27$ $-27$ .

Explanation:

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

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

$9 \times 10 + 80 - 78 - + 17 \times 7$ $9xx10+80-78-+17xx7$

A negative and a positive make a negative.

$9 \times 10 + 80 - 78 - 17 \times 7$ $9xx10+80-78-17xx7$

Carry out the multiplications first.

$90 + 80 - 78 - 119$ $90+80-78-119$

Carry out the addition and subtraction from left to right.

$170 - 78 - 119$ $170-78-119$

$92 - 119$ $92-119$

$- 27$ $-27$

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How do you simplify $9 \times 10 + 80 - 78 - + 17 \times 7$ $9xx10+80-78-+17xx7$ using the order of operations?

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Explanation:

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How do you simplify 9xx10+80-78-+17xx79×10+80−78−+17×79xx10+80-78-+17xx7 using the order of operations?

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How do you simplify $9 \times 10 + 80 - 78 - + 17 \times 7$ $9xx10+80-78-+17xx7$ using the order of operations?