Question

a+2b= 9; 4a+9b=11
please solve. ​

Answer 1

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7(a+b)

Step-by-step explanation:

(3a-2b)+(4a+9b)

3a-2b+4a+9b

7a+7b

7(a+b)

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Answer 2

I hope the above picture perfectly helps you mate