2/5(a+b)+3/5(a+c)
Distribute
(2/5) (a) + (2/5) (b) + (3/5)(a) +(3/5)(c)
= 2/5a+2/5b+3/5a+3/5c
Combine like terms
2/5 a + 2/5 b + 3/5 a + 3/5 c
= ( 2/5 a + 3/5 a ) + ( 2/5 b) +(3/5 c)
= a + 2/5 b +3/5 c
I hope that's help !
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