4x-3y=12 y=7x-4 substitution method

x = 0 , y = -4

Step-by-step explanation:

4x - 3y = 12 } Equation 1

y = 7x - 4 } Equation 2

We can substitute the value of y from equation 2 in equation 1:

4x - 3(7x - 4) = 12

4x - 21x + 12 = 12

-17x = 12-12

-17x = 0

x = 0

Now we can substitute this value of x in equation 2 :

y = 7x - 4 } Equation 2

y = 7·0 - 4 = -4

x = 0 , y = -4

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step-by-step explanation:

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