Question

x+y=5,2x+2y=10 find x and y using substution method​

Answer 1

Answer:

x + y = 5

x + y = 52x + 2y = 10

x + y = 52x + 2y = 10x + y - 5 = 0

x + y = 52x + 2y = 10x + y - 5 = 02x + 2y - 10 = 0

x + y = 52x + 2y = 10x + y - 5 = 02x + 2y - 10 = 0So, 1/2

x + y = 52x + 2y = 10x + y - 5 = 02x + 2y - 10 = 0So, 1/21/2

x + y = 52x + 2y = 10x + y - 5 = 02x + 2y - 10 = 0So, 1/21/2-5/(-10) = 1/2

x + y = 52x + 2y = 10x + y - 5 = 02x + 2y - 10 = 0So, 1/21/2-5/(-10) = 1/2This is case coincident therefore , infinite solution exist