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If 7c+8b=15and 3b-c=2, what is the value...

If `7c+8b=15and 3b-c=2,` what is the value of b ?

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The correct Answer is:
1
Start by isolating c in the second equation: `c =3b-2.` Then substitute into the first equation and solve:
`7 (3b-2)+ 8b=15`
`21b-14+8b=15`
`29b-14=15`
`29b=29`
`b=1`
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