Question

2. - 4x + 9y = 14 12x – 10y = -8 ; multiplication

Answer 1

Answer:

-4x + 9y = 14 answer is x = $\frac{9}{4}y+ \frac{-7}{2}$

12x - 10y = -8 answer is x = $\frac{5}{6}y +\frac{-2}{3}$

Step-by-step explanation:

solve for x

-4x + 9y = 14

add -9y to both sides

-4x + 9y + -9y = 14 + -9y

-4x = -9y + 14

divide both sides by -4

-4x/-4 = -9y + 14/-4

Anwser

x = $\frac{9}{4}y + \frac{-7}{2}$

solve for x

12x - 10y = -8

add 10y to both sides

12x - 10y + 10y = -8 + 10y

12x = 10y -8

Divide both sides by 12

12x/12 = 10y - 8/12

Anwser

x = $\frac{5}{6}y +\frac{-2}{3}$

Answer 2

Answer:

Step-by-step explanation: (Equation 2) = 12(-12+9y/4) - 10y = -8

-144+108y/4 - 10y = -8

-144 + 108y - 40y/4 = -8

-144 + 108y - 40y = -32

108y - 40y = -32+144

68y = 112

Y= 1.64

2-4x+9y=14

12x-10y= -8

2-14+9y = 4x

-12 + 9y = 4x ( equation 3)

(Put in equation 2)