Y = x - 4y = 4x - 10tolong selesaikan dengan metode subtitusi.

Y = x – 4y = 4x – 10tolong selesaikan dengan metode subtitusi.

Penjelasan dengan langkah-langkah:

y = x – 4

y = 4x – 10

——————–

y = x – 4

x = y + 4

———————

y = 4x – 10

y = 4(y + 4) – 10

y = 4y + 16 – 10

y = 4y + 6

y – 4y = 6

-3y = 6

y = -2

——————-

y = x – 4

-2 = x – 4

x = 4 + (-2)

x = 2

HP : {x, y} = {2, -2}

Jawab:

Easy Pizzy Lemon Squezzy 🙂

Penjelasan dengan langkah-langkah:

Consider the first equation. Subtract x from both sides.

$y-x=-4$

Consider the second equation. Subtract 4x from both sides.

$y-4x=-10$

To solve a pair of equations using substitution, first solve one of the equations for one of the variables. Then substitute the result for that variable in the other equation.

$y-x=-4, y-4x=-10$

Choose one of the equations and solve it for y by isolating y on the left hand side of the equal sign.

$y-x=-4$

Add x to both sides of the equation.

$y=x-4$

Substitute x − 4 for y in the other equation, y − 4x = −10.

$x-4-4x=-10$

Add x to −4x.

$-3x-4=-10$

Add 4 to both sides of the equation.

$-3x=-6$

Divide both sides by −3.

$x=2$

Substitute 2 for x in y = x − 4. Because the resulting equation contains only one variable, you can solve for y directly.

$y=2-4$

Add −4 to 2.

$y=-2$

The system is now solved.

$y=-2, x=2$