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Rasek [7]
3 years ago
14

X+78=3x-2 ..................

Mathematics
1 answer:
photoshop1234 [79]3 years ago
6 0

Answer:

x=40

Step-by-step explanation:

x+78=3x-2\\\mathrm{Subtract\:}78\mathrm{\:from\:both\:sides}\\x+78-78=3x-2-78\\x=3x-80\\\mathrm{Subtract\:}3x\mathrm{\:from\:both\:sides}\\x-3x=3x-80-3x\\\\

-2x=-80\\\frac{-2x}{-2}=\frac{-80}{-2}\\x=40

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The hypotenuse of a 45°-45°-90° triangle measures 7 StartRoot 2 EndRoot units.
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Elena-2011 [213]
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6 0
3 years ago
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balu736 [363]

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8 0
3 years ago
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Korvikt [17]

Answer:

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Step-by-step explanation:

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3 years ago
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