Respuesta :
x+2(2x-4)=12. (substitute)
x+4x-8=12. (distributive prop)
5x-8=12 (combine like terms)
5x=20 (add 8 to both sides of equation)
x=4 (dividing)
x+4x-8=12. (distributive prop)
5x-8=12 (combine like terms)
5x=20 (add 8 to both sides of equation)
x=4 (dividing)
Answer:
algebraically.
y = 2x - 4........….....(1)
x + 2y = 12..............(2)
substituting the value of y in equation (2) we get
x+2(2x - 4)=12
x+4x-8=12
5x=12+8
x=20/5=4
substituting the value of x in equation(1) we get
y=2×4-4=8-4=4
:.(x,y)=(4,4)answer
