nomercyhero242 nomercyhero242
  • 21-11-2018
  • Mathematics
contestada

Guys please help me in this question plz,

Guys please help me in this question plz class=

Respuesta :

jimrgrant1 jimrgrant1
  • 21-11-2018

There are 5 buttons on a headband and 3 buttons on a scarf

let h represent a headband and s represent a scarf, then

14s + 12h = 102 → (1)

14s + 9h = 87 → (2)

(2) - (1) term by term to eliminate the term in s

3h = 15 ( divide both sides by 3 )

h = 5

substitute h = 5 in either (1) or (2) and solve for s

(2) : 14s + 45 = 87 ( subtract 45 from both sides )

14s = 42 ( divide both sides by 14 )

s = 3


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