Respuesta :
Answer:
x = 10, y = 10 is the solution for the given system of equations.
Step-by-step explanation:
Here, the given set of equation are:
5 x + 3 y = 80
and -2 x + 30 = y
Here, substitute the value of y = -2x + 30 in equation (1)
Now, 5 x + 3 y = 80 ⇒ 5x + 3( -2x + 30 ) = 80
or, 5x -6x + 90 = 80
or, -x + 90 = 80
or, x = 90 - 80
⇒ x = 10
Now, y = -2x + 30 = -2(10) + 30
= -20 + 30
= -20 + 30 = 10
⇒ y = 10
hence, x = 10, y = 10 is the solution for the given system of equations.
