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3 years ago

Does 0.9x+5.1x-7=2(2.5x-3) have no solution many solutions or one solution?

Mathematics

1 answer:

olganol [36]3 years ago

4 0

Answer:

This equation has ONE unique solution, which is x = 1.

Step-by-step explanation:

Let's actually solve this equation, 0.9x+5.1x-7=2(2.5x-3).

Mult. all four terms by 10 to eliminate the fractions:

9x+51x-70=2(25x-30)

Perform the indicated multiplication:

9x+51x-70= 50x - 60

Combine like terms: 60x - 70 = 50x - 60 => 10x = 10, and x = 1

This equation has ONE unique solution, which is x = 1.

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3 years ago

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irakobra [83]

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\\\\\\
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$\bf \begin{array}{ccll}
feet&hours\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
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