sub a(b-5) from b(5-a).
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Answer:
5a + 5b
Step-by-step explanation:
a ( b - 5 )
= a ( b ) + a ( - 5 )
= ab - 5a
b ( 5 - a )
= b ( 5 ) + b ( a )
= 5b + ab
Substract a ( b - 5 ) from b ( 5 - a ) means,
b ( 5 - a ) - a ( b - 5 )
= 5b + ab - ( ab - 5a )
= 5b + ab - ab + 5a
= 5b + 0 + 5a
= 5a + 5b
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