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Solve by SUBSTITUTION.
Y
= 5X -3
Y=2X+4


Sagot :

Answer:

x = [tex]\frac{7}{3}[/tex] , y = [tex]\frac{26}{3}[/tex]

Step-by-step explanation:

given the system of equations

y = 5x - 3 → (1)

y = 2x + 4 → (2)

substitute y = 5x - 3 into (2)

5x - 3 = 2x + 4 ( subtract 2x from both sides )

3x - 3 = 4 ( add 3 to both sides )

3x = 7 ( divide both sides by 3 )

x = [tex]\frac{7}{3}[/tex]

substitute x = [tex]\frac{7}{3}[/tex] into either of the 2 equations and solve for y

substituting into (1)

y = 5 ( [tex]\frac{7}{3}[/tex] ) - 3 = [tex]\frac{35}{3}[/tex] - [tex]\frac{9}{3}[/tex] = [tex]\frac{26}{3}[/tex]

The solution is x = [tex]\frac{7}{3}[/tex] , y = [tex]\frac{26}{3}[/tex]