Question

3x - 4y = 7

Answer 1

Answer:

-6y = 12

Step-by-step explanation:

3x - 4y = 7

-(3x + 2y = -5)

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distribute the minus sign to all the terms in the second equation

3x - 4y = 7

-3x - 2y = +5

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0x   -6y   = 12

-6y = 12

Answer 2

Answer:

When the second equation is subtracted from the first, the resulting equation is:

-6y = 12

Step-by-step explanation:

3x - 4y = 7

3x + 2y = -5

On subtracting second equation from first.

⇒ 3x-4y-3x-2y=7-(-5)

⇒ -6y=12

Hence, when the second equation is subtracted from the first, the resulting equation is:

-6y = 12