Solve the system for x and y -3x+8y=103 -5x-8y=-255
1 answer:
9514 1404 393
Answer:
(x, y) = (19, 20)
Step-by-step explanation:
The coefficients of y are opposites, so we can add the two equations to eliminate y.
(-3x +8y) +(-5x -8y) = (103) +(-255)
-8x = -152
x = 19 . . . . . . . divide by -8
Substituting into the first equation, we have ...
-3(19) +8y = 103
8y = 160
y = 20
The solution is (x, y) = (19, 20).
You might be interested in
Answer:
<h2>C. (3, -4)</h2>Step-by-step explanation:
If the system of linear equations is graphed, then the solution is the intersection of lines.
Read it from the graph (look at the picture).
Answer:
10
Step-by-step
Reduce to
and simply subtract.