Question

What is the value of 21 + 6² - (35 - 8) ×3? A. 90 B. 0 C. -24 D. -54

Answer 1

C. -24

Explanation:

Hello!

To solve this we have to follow the order of PEMDAS

Parenthesis, exponents, multiplication and division, addition and subtraction

`21 + 6^(2) - (35 - 8) * 3`

Parenthesis first

`21 + 6^(2) - (27) * 3`

Exponents next

21 + 36 - 27 * 3

Multiplication and division from left to right

21 + 36 - 81

Addition and subtraction from left to right

57 - 81 = -24

The answer is C.-24

Hope this helps!

Answer 2

C. -24

Explanation:

`21+6^2-\left(35-8\right)* \:3\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Calculate\:within\:parentheses}\:\left(35-8\right)\::\quad 27\\\\=21+6^2-27* \:3\\\\\mathrm{Calculate\:exponents}\:6^2\::\quad 36\\\\=21+36-27* \:3\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:27* \:3\::\quad 81\\\\=21+36-81\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:21+36-81\::\quad -24\\\\=-24`