Questions: for the variable in the equation: (7x+4)/3 = 9/2
x = -2 1/14
x = -11/14
x = -4 9/14
x = 1 5/14
Transcript text: for the variable in the equation: $\frac{7 x+4}{3}=\frac{9}{2}$
\[
\begin{array}{l}
x=-2 \frac{1}{14} \\
x=-\frac{11}{14} \\
x=-4 \frac{9}{14} \\
x=1 \frac{5}{14}
\end{array}
\]
Solution
Solution Steps
To solve the equation \(\frac{7x + 4}{3} = \frac{9}{2}\), we need to isolate the variable \(x\). We can do this by first eliminating the fractions through cross-multiplication, then solving the resulting linear equation.
Step 1: Eliminate the Fraction
We start with the equation:
\[
\frac{7x + 4}{3} = \frac{9}{2}
\]
To eliminate the fraction, we can cross-multiply:
\[
2(7x + 4) = 3 \cdot 9
\]
Step 2: Simplify the Equation
Expanding both sides gives:
\[
14x + 8 = 27
\]
Next, we isolate \(x\) by subtracting 8 from both sides:
\[
14x = 27 - 8
\]
This simplifies to:
\[
14x = 19
\]
Step 3: Solve for \(x\)
Now, we divide both sides by 14:
\[
x = \frac{19}{14}
\]
Converting this to a mixed number gives:
\[
x = 1 \frac{5}{14}
\]