Question

(I)3x+4y=12 , 4x+7y=12. (ii) 7x+4y=12,3x+4y= -4 (III)3x-5y= -1 ,x-y=-1. solve these sums by using elimination and substitution method ​

Answer 1

Answer:

I did not understand this question

Answer 2

Answer:

answer of first only:

Step-by-step explanation:

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