Question

3x - 4y = 12 , 6x + 8y = 48
solve the equation ​

Answer 1

Answer:

Step-by-step explanation:

3x-4y = 12→ equation 1

6x+8y = 48 ⇒ 2( 3x+4y) = 2 x 24

⇒ 3x + 4y = 24→equation 2

Solving both the equations by adding

3x - 4y  = 12

3x + 4y = 24

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6x + 0y = 36

⇒ 6x = 36

⇒ x = 36 /6

⇒ x = 6

Substituting x = 6 in equation 1

3x-4y = 12

⇒ 3(6) - 4y = 12

⇒ 18 - 4y = 12

⇒ 18 - 12 = 4y

⇒ 6 = 4y

⇒ 6/4 = y

⇒ 3/2 = y

⇒ y = 1.5