Question

Evaluate given: x=2 & y=6 8-4x+5y

Answer 1

30

Explanation:

We are given the expression:

`8-4x+5y`

and asked to evaluate given x=2 and y=6.

Therefore, we must substitute 2 for x and 6 for y.

`8-4(2)+5(6)`

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction.

Multiply 4 and 2.

4*2= 8

`8-8+5(6)`

Multiply 5 and 6.

5*6=30

`8-8+30`

Subtract 8 from 8.

8-8=0

`0+30`

Add 0 and 30.

`30`

The expression 8-4x+5y when evaluated at x=2 and y=6 is equal to 30.