Question

identify the solutions of the system of equations, if any. 2x + 5y = 10 y = 2 - x

Answer 1

A) 2x + 5y = 10

y = 2 - x Let's change this equation a little:
B) x + y = 2

Multiply B by -2
B) -2x - 2y = -4 then adding this to A
A) 2x + 5y = 10

we get
3 y = 6
y = 2

Therefore x = 0