eq^2: 7x=84 divide 84 by 7 which is 12.
therefore x is equal to 12. Then
1) take that 12 you got in equation 2 and substitute in equation 1 which is:
7x-12y=180
7(12)-12y=180
84 -12y=180
-12y=180-84
-12y=96 ............divide both sides with -12
-y=8 (×-1) both sides
y= -8
therefore 7(12)-12(-8)=180
The answer is 0.3
Do you want me to explain?
Step-by-step explanation:
1. 42m below the sea level.
2. you withdrawn 42 dollars from 100.
3. -14°C or -14°F or -14K.
4. your height increased from 242inches to 245 inches. your height increased by 3 inches !
hope this helps you.
Hi!
First make the denominators the same.

Add the numerators

Simplify to get your answer
The answer is

Hope this helps! :)
Answer:
I don't understand.
Step-by-step explanation: