SOLUTION: 12x + 7y = 19 and 4x - y = 3 then what is the value of 8x + 8y?

Algebra.Com
Question 441827: 12x + 7y = 19 and 4x - y = 3 then what is the value of 8x + 8y?
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!

and
...solve the system
---------------------------------
......solve for
......substitute in and solve for





....now find



then the value of

RELATED QUESTIONS

If 12x+7y=19 and 4x-y=3 then what is the value of... (answered by jim_thompson5910)
7y+8y+103+91 What is the value of... (answered by Fombitz)
what is the answer for this equation? -{4x-(3y-8x)-[8y-12x-y]} Please help me. Thank... (answered by solver91311)
what is the solutions of these systems if any? 1) x+7y=62 and -x+2y=10 2) 3x+4y=12 and... (answered by ewatrrr)
what is slope and y-intercept of... (answered by algebrahouse.com)
What is the value of y satis fies the equation, 8*8y-4 =... (answered by erica65404)
Question 1 What is the set up for the coefficient determinant (D) in the... (answered by solver91311)
The three angles of a triangle have measures 12x°, 3x°, and 7y°, where 7y > 60. If x and... (answered by solver91311)
Solve the system using the substitution method. Show all your steps. 1. x+2y=6... (answered by checkley79)