Answer:
x = 1 , y = 6
Explanation:
given the system of equations
x + y = 7 → (1)
6x - y = 0 → (2)
adding the 2 equations, term by term will eliminate y
(x + 6x) + (y - y) = 7 + 0
7x + 0 = 7
7x = 7 ( divide both sides by 7 )
x = 1
substitute x = 1 into (1) and solve for y
1 + y = 7 ( subtract 1 from both sides )
y = 6
the solution is x = 1 , y = 6