117k views
25 votes
2.
- 4x + 9y = 14
12x – 10y = -8
;
multiplication

User Monogate
by
8.3k points

2 Answers

5 votes

Answer:

-4x + 9y = 14 answer is x =
(9)/(4)y+ (-7)/(2)

12x - 10y = -8 answer is x =
(5)/(6)y +(-2)/(3)

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 =
(9)/(4)y + (-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 =
(5)/(6)y +(-2)/(3)

User Diralik
by
8.2k points
11 votes

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)

User En Peris
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.