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3 years ago

What is x equal to ? 7x+3=2x-4

Mathematics

1 answer:

Amanda [17]3 years ago

4 0

<h3><u>Explanation</u></h3>

Solve for x-term by making the x-term as the subject.

$7x +3 = 2x - 4 \\ 7x - 2x = - 4 - 3 \\ 5x = - 7 \\ x = \frac{ - 7}{5} \longrightarrow - \frac{7}{5}$

Answer Check by substituting the value of x in the equation.

$7 ( - \frac{7}{5} )+ 3 = 2( - \frac{7}{5} ) - 4 \\ - \frac{49}{5} + 3 = - \frac{14}{5} - 4 \\ - \frac{49}{5} + \frac{15}{5} = - \frac{14}{5} - \frac{20}{5} \\ - \frac{34}{5} = - \frac{34}{5}$

The equation is true for the value of x. Therefore the answer is x = -7/5

<h3><u>Answer</u></h3>

<u> $\large \boxed{x = - \frac{7}{5} }$ </u>

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