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Exercises Numbers, fractions and percents

Example 3.51 from Prealgebra, 3.4 Multiply and Divide Integers

Multiply and Divide Integers: example 3.51

$Simplify: 7 (−2) + 4 (−7) - 6 .$

Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.

Solution
We use the order of operations. Multiply first and then add and subtract from left to right.

$7 (−2) + 4 (−7) −6$

Multiply first. $−14 + (−28) −6$

Add. $−42 - 6$

Subtract. $−48$

Your turn

The book's Try It right after this example: same idea, new numbers. Only the answer is given.

Simplify:

$8 (−3) + 5 (−7) −4$

How did it go?

PreviousMultiply and Divide Integers: example 3.50 Next Multiply and Divide Integers: example 3.52

From Prealgebra (1st edition) by OpenStax (Rice University), section 3.4, licensed under CC BY 4.0. Original at openstax.org. We split the solution into steps; the words, numbers and figures are the book's. OpenStax doesn't endorse this site.