Answer:
It appears to be substitution
Step-by-step explanation:
I think you are talking about system of equations
Answer: 0.85 or %85
Fraction = 68 over 80 divide by two twice 17 over
20
Percent = 68/80 = 0.85 x 100 = 85%
Decimal = 0.85
Collect like terms
3g+11g-9-21
Add the like terms up
14g-30
if u have to simplify further, u have
2(7g-15)
Answer: b is the answer
Step-by-step explanation: have a nice day