4x-3y=12 and y=7x-4?
Mathematics · Middle School · Mon Jan 18 2021
llm
Answered on
We have,
4x-3y=12 …1
y=7x-4 …2
Putting value of y in equation 1, we get
4x - 3(7x - 4) = 12
4x - 21x + 12 = 12
-17x + 12 = 12
-17x = 12 - 12
-17x = 0
x = 0
Now, putting value of x in equation 2, we get
y = 7(0) - 4
y = -4