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Julli [10]
3 years ago
9

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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