Answer:
Option b - Subtract
Step-by-step explanation:
Given : Expression 
To find : Which operation should be completed first in the expression below?
Solution :
P - Parentheses
E - Exponent
D - Divide
M - Multiplication
A - Addition
S - Subtraction
In the first step we solve the bracket in the expression 
So, we do subtraction i.e. 12-8=4
Therefore, option b is correct.
Answer:
6g -3g +6g -3g = 5+6-11-3+5-11
6g=-18
6g= -18 /÷6
g= -3
Answer:
0
Step-by-step explanation:
The opposite of 12 is -12, and 12+(-12)=12-12, or 0.
The width of the enlarged photo is 9 inches.
Given:
Original length = 2 inches
Original width = 1 inch
Extended length = 18 inches
Extended width = ?
2:1 = 18:x
2x = 1*18
2x = 18
2x/2 = 18/2
x = 9 * extended width.
to check:
2:1 = 18:9
2*9 = 1*18
18 = 18
1) 5:4 2) 4:5 3) 5:9 4) 2:3 5) 1:4 6)3:2 7) 5:13 8) 6:7 9) 7:5 10) 13:18 11) 18:5 12) 6:13. The others were weird, because it's been forever since I've had to do these.