13 - 8 = 5 13 > 8 PLEASE BRAINLY ME!!!!!!!!!!!!
Collect likes terms firstly
2z= -25
Divide everything by two to get the value of z
So your answer is -12.5
Use the substitution method
f(x) = 12x + 15
f(4)=12(4)+15
Multiply first then because of using PEMDAS.
P= parenthesis
E= exponents
M= multiplication
A= addition
S= subtraction
48+15
=63
Answer: f(4)=63
