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  • 22-02-2022
  • Mathematics
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solve for x please describe the steps 50 points

solve for x please describe the steps 50 points class=

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fieryanswererft
fieryanswererft fieryanswererft
  • 22-02-2022

Answer:

x = 6

explanation:

USE: [tex]\boxed{\frac{side-length }{base -length} = \frac{side-length}{base -length} }[/tex]

solve:

[tex]\frac{21}{15} = \frac{7}{x-1}[/tex]

[tex]21(x-1) = 7(15)[/tex]

[tex]21x-21 = 105[/tex]

[tex]21x = 105+21[/tex]

[tex]21x = 126[/tex]

[tex]x = \frac{126}{21}[/tex]

[tex]x = 6[/tex]

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