Question

Y= -3x+5,5x-4y=-3 solving system of equations by substitution​

Answer 1

Step-by-step explanation:

5x-4y=-3

y=5x+3/4--(1)

y=-3x+5--(2)

compare the two equations

5x+3/4=-3x+5

5x+3=4(-3x+5)

5x+3=-12x+20

now add 12x on both sides

17x+3=20

now subtract 3 from both sides

17x=17

now divide 17 from both sides

x=1

plug this value of x on any one of the above 2 equation I am using (1)

y=5(1)+3/4

y=5+3/4

y=8/4

y=2