Question

What is the value of this expression when a = 4, b= -5, and c = -7? a + 2bc/3a

Answer 1

9.8

Explanation:

Plug in all the values to the equation:

4 + 2(-5)(-7)/3(4)

First, do the top and bottom of the fraction. So, you have 2 x -5 x -7. This equals -10 x -7, which equals 70. Then, as your denominator, you have 3 x 4 = 12.

4 + 70/12

Then, divide 70 by 12 (which equals 5.8), and add 4 to it. (9.8)

So 9.8 is your final answer

Answer 2

Either 37/6 or 6.2

Explanation:

Follow PEMDAS (parenthesis, exponents, multiplication, division, addition, subtraction) where you always start with whatever is first in PEMDAS, in this instance, it's parenthesis or multiplication.

4+2(-5)(-7)/ 3(4)