Algebra 1

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1. Let B = brother's age
and C = cousins agae
====================
B+8 = C
2(B-3) = C-3
Solve those two equations simultaneously for B and C.

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2. Present Past
Cousin x+8 2(x-3)
Brother x x-3

Solution: x+8-3=2(x-3)
x+5 =2x-6
5+6 =2x-x
11 =x (brother)
19 =11+8 (cousin)

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