Question

I need solutiin with full explanation of these question.
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Answer 1

Answer:

mark as brainliest if I deserve it

Answer 2

Answer:

A-10= B+10

A-B=20---------(1)

A+20=2(B-20)

A-2B=(-60)--------(2)

{(1) - (2)}

B=80---------(3)

{putting value of (3)in (1)}

A=100