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For the solution (x, y) to the system of equations, what is the value of x − y?7x + 3y = 86x − 3y =...
4 months ago
Q:
For the solution (x, y) to the system of equations, what is the value of x − y?7x + 3y = 86x − 3y = 5A) −43B) 23C) 43D) 223
Accepted Solution
A:
Answer:x = 1 y = 1/3Step-by-step explanation:STEP 1) get the equations to equal each other7x + 3y = 8 6x - 3y = 5- 7x - 6x3y = 8 - 7x -3y = 5 - 6x *1 *-13y = 8 - 7x = 3y = -5 + 6xSTEP 2) solve for x8 - 7x = 6x - 5 +7x8 = 13x - 5 +513 = 13x /131 = xSTEP 3) use x to solve for y7x + 3y = 8 =7 + 3y = 8 -73y = 1 /3y = 1/3