Evaluate 0.1m+8-12n when m=30 and n=1/4

Equation = 0.1 x 30 + 8 - 12 x 1/4

0.1 x 30 would be 3 move the decimal and time the 1 and 3 you get 3

next form of equation = 3 + 8 - 12 x 1/4

using pemdas you move to the end of the equation

12 x 1/4 would be reversed into 12 / 4 which is 3

next form of equation = 3 + 8 - 3

final answer 3 + 8 - 3 = 8