Question

Add: 6 – 3a + b, a – 7 – 6b and 3b +2 – a



explain too please.

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Answer 1

Answer:

1-3a-2b

Step-by-step explanation:

=(6-3a+b)+(a-7-6b)+(3b+2-a)

=(6-7+2)+(-3a+a-a)+(b-6b+3b)

= 1-3a-2b

Answer 2

Answer:

I hope it helps you.

Step-by-step explanation:

-3a+b = -6 -------equation 1.

a-6b = 7 ----------equation 2.

-a+3b = -2 -----equation 3.

adding equation 1,2 and 3.

-3a+b+a-6b-a+3b = -6+7-2

-3a-2b = -1

-(3a+2b) = -1 (minus to minus cancel)

3a+2b = 1

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