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3x-4x=7

$3 x-4 x=7$

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Solve equations involving like terms

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Q.

3 x-4 x=7

Combine Like Terms: Combine like terms on the left side of the equation. $\newline$ We have $3x$ and $-4x$ , which are like terms because they both contain the variable $x$ . $\newline$ To combine them, we add their coefficients: $3 - 4 = -1$ . $\newline$ So, $3x - 4x$ simplifies to $-1x$ .
Write Simplified Equation: Write the simplified equation. $\newline$ After combining like terms, our equation is now $-1x = 7$ .
Solve for x: Solve for x. $\newline$ To isolate $x$ , we need to divide both sides of the equation by $-1$ . $\newline$ Doing so, we get $x = \frac{7}{-1}$ .
Perform Division: Perform the division to find the value of $x$ . $7$ divided by $-1$ is $-7$ . So, $x = -7$ .

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