f + s = 260
f = 3s + 8
Substitute!
3s + 8 + s = 260
4s = 252
s = 63
f = 260 - 63 or f = 3(63) + 8
f = 197
Lucy S.
asked 06/04/19FIRST PART:
SECOND PART:
f + s = 260
f = 3s + 8
Substitute!
3s + 8 + s = 260
4s = 252
s = 63
f = 260 - 63 or f = 3(63) + 8
f = 197
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