radomes.openskiesproject.org
marmar8 marmar8
  • 04-04-2016
  • Mathematics
Answered

What is -4x+y=6 and -5x-y=21 in subsitution

Verified Answer :

sbcardinals
sbcardinals sbcardinals
  • 04-04-2016

Solve for y in the first equation.
y = 4x + 6
Substitute 4x + 6 into the second equation.
-5x - (4x + 6) = 21
Distribute
-5x - 4x - 6 = 21
Combine like terms 
-9x = 27
Divide both sides by -9
x = -3
Substitute back into first equation
-4(-3) + y = 6
Solve for y
y = -6

Answer Link

Related Questions

a line has a slope of 12 and a run 50 what is the rise
11 pennies is what fraction of a dollar
What was one of the positive effects of westward expansion
what is an integer that is divisible by 2
Noah has set some goals for his fitness He decided to start a weightlifting routine that consists of lifting weights for one hour three days a week What area of
How do you solve for b A12h bc
1Did any events preceding the Souths secession not contribute to the decision to secede
Too much arousal in an athlete can lead to A increased muscle tension and attention deficits thus decreasing performance B a physical and mental state in which
Lisa bought five CDs from the store The price of each CD was the same After she bought the CDsher account balance showed a change of 6495 What would have been t
A person with conservative views believes that government should have a weak role in peoples daily lives and is more likely to support the Republican Party weak