nicole172 nicole172

26-08-2017
Mathematics

contestada

FG=8x+4. If GH=4x+8 and FH=15x-9, then what does FH=?

FG8x4 If GH4x8 and FH15x9 then what does FH class=

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trishinada63 trishinada63

26-08-2017

So 8x+4+4x+8=15x-9

Combine like terms.

12x+12=15x-9

Add 9 to both sides.

12x+21=15x

Subtract 12 from both sides.

21=3x

Divide both sides by 3.

x=7

Now plug in 7 for x in 8x+4.

8(7)+4

56+4

=60

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