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3 years ago

If 2a+b=6 and a−6=b, what is the value of a?

Mathematics

2 answers:

earnstyle [38]3 years ago

3 0

Step-by-step explanation:

Given

2a + b = 6......equation 1

a - 6 = b

a = b + 6........equation 2

Putting equation 2 in equation 1

2 ( b + 6 ) + b = 6

2b + 12 + b = 6

3b = 6 - 12

3b = - 6

b = - 6 / 3

Therefore b = - 2

Now

a = - 2 + 6 = 4

hope it will help :)

Sedaia [141]3 years ago

3 0

Answer:

a = 4

b = -2

Step-by-step explanation:

2a + b = 6

a - 6 = b

a - b = 6

Elimination

2a + b = 6

a - b = 6

________+

3a = 12

a = 12/3

a = 4

a - b = 6

4 - b = 6

-b = 6 - 4

-b = 2

b = -2

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Step-by-step explanation:

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3 years ago

dnw snow storm Francisco had 17 inches of snow on his lawn.the temperature then increased in the snow begin to melt at a consist

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Answer:

Step-by-step explanation:

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3 years ago

4n+9=6 What is the value of n?

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-- Subtract 9 from each side of the equation.

-- Divide each side by 4 .

-- The value of 'n' is right there, and you did it all on your own !

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4 years ago

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