3x+5y=42
9x+7y=78
adding above equation
12x+12y=120
x+y=10
Answer:
i thinks its a. integers
Step-by-step explanation:
hope its help and soory if im wrong
Answer:
Step-by-step explanation:
look this solution :
Silver for x
-3 - (-8) - (-2) = x
Switch the equation to make x on the right
x = -3 - (-8) - (-2)
x = 5 - (-2)
x = 7
• A negative minus a negative will always evaluate to a positive.
• A positive minus a negative will always evaluate to a positive.
2 weeks = 14 day
14 * 15 = 210 seconds
210/60=3 hours and 30 minutes or 3.5 hours.
