You distribute the negative in the second equation
Answer:
18
Step-by-step explanation:
25 + 47 = 72
72 ÷ 4 = 18
Answer:
Option 2.
Step-by-step explanation:
The antifreeze claims to protect between -30 C and 130 C. The inequality should be this: 
You can replace C with the Fahrenheit formula: C=
So, the inequality becomes 
Answer:
3
Step-by-step explanation:
System of linear equations
A set of two or more linear equations containing two or more variables.
2x + 3y = −1
x − 3y = 4