Help with order of operations..?

Question

4(-5) minus 7(-6)

So, is it -20 minus 42 or

-20 plus 42?

What's the answer?

Answer 1

it is

-20 plus 42?

Answer 2

-20 -(-42) = -20 + 42 = 22  

Answer 3

22

Answer 4

yeah the answer is 22. the order of operations, from left to right, is everything in parentheses, brackets,etc followed by exponents/roots, multiplication/division, and then finally addition/subtraction.

in this case you would first multiply 4 and -5 to change the problem to

-20 - 7(-6). then you would multiply the 7 and -6 to get -20 - -42. now the only thing left to do is to subract -42 from -20. remember that subtracting a negative number is like adding a positive so the problem can also be read as -20 +42. therefore the answer would be 22.

Answer 5

Rule for Order of Operations - BODMAS

B -Brackets first

O -Orders (ie Powers and Square Roots, etc.)

DM- Division and Multiplication (left-to-right)

AS- Addition and Subtraction (left-to-right)

Therefore according to the BODMAS rule we have to open brackets first.

4(-5)minus 7(-6)

= -20 minus -42

=-20+42

=22

Answer 6

4(-5)-7(-6)

Complete the multiplication of 4 by each term inside the parenthesis.

-20-7(-6)

Complete the multiplication of -7 by each term inside the parenthesis.

-20+42

Add 42 to -20 to get 22.

22  

Answer 7

4(-5) minus 7(-6) = -20-(-42) = -20+42 = 22

Answer 8

4(-5) minus 7(-6)

=-20 minus -42

double minus makes it a plus

=-20 plus 42

=22

i think >.<"