f(-3)=2(-3)+8(-3)-4

Solution for f(-3)=2(-3)+8(-3)-4 equation:

Simplifying
f(-3) = 2(-3) + 8(-3) + -4

Reorder the terms for easier multiplication:
-3f = 2(-3) + 8(-3) + -4

Multiply 2 * -3
-3f = -6 + 8(-3) + -4

Multiply 8 * -3
-3f = -6 + -24 + -4

Combine like terms: -6 + -24 = -30
-3f = -30 + -4

Combine like terms: -30 + -4 = -34
-3f = -34

Solving
-3f = -34

Solving for variable 'f'.

Move all terms containing f to the left, all other terms to the right.

Divide each side by '-3'.
f = 11.33333333

Simplifying
f = 11.33333333