Can someone show me how the answer to this equation is -22?

Given:

5×2² − 7(4 + 2)

This problem isn't even really algebra, it's just following the order of operations: Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.

Parentheses are first:

5×2² − 7(6)

Next comes exponents:

5(4) − 7(6)

Next is multiplication or division (in this case, we have two multiplications, so we just do them from left to right):

20 − 42

Last is addition or subtraction:

-22

So the x's are multiplication right?

So remember order of operation (do the following in order):

Brackets

Exponents

Division

Multiplication

Addition

Subtraction

Division and multiplication is which ever comes first, and same with addition and subtraction.

So:

5 x 2² – 7x (4+2)

=5 x 2² - 7 x 6 [do brackets first]

=5 x 4 - 7 x 6 [do exponents next]

=20 - 7 x 6 [do the first multiplication next]

=20 - 42 [do the next multiplication next] [or just do this and the above at the same step]

=-22

Hope that helped, and made sense! :)

When typing a number with an exponent you do it like this. 2 squared would be 2^2. 3 squared would be 3^2..

So now we have

5 x 2^2- 7 x (4+2)

5 x 4 -7 x 6

20 - 42

-22

first you would do whats in parentheses (4+2) which equals 6. so now your equasion is: 5 x 2^2 - 7 x 6

next you do the exponents 2^2 which equals 4. now your equasion is: 5 x 4 - 7 x 6

mutiplication is done before subtraction so you multiply 5 x 4 which would be 20, and 7 x 6 which would be 42. so now the equation is 20 - 42 which is -22

hope that helped.

use order of operations: parenthesis, exponents, multiply/divide, add/subtract....

5 x 2(squared) – 7x (4+2)

5 x (4) - 7 x (6)

20 - 42

-22

Please Excuse My Dumb *** Students PEMDAS parenthesis, exponents, multiply, divide, add, subtract. Those are the order of operations- the order of importance and what you do first in an equation. So the equation is 5x2^2-7x(4+2), 5x4-7x(6), 20-42, -22