1. The problem is to solve the equation $1o = \frac{4x}{3}$ for $x$. 2. First, clarify the equation: it seems "1o" might be a typo for "10". So the equation is $10 = \frac{4x}{3}$. 3. To solve for $x$, multiply both sides by 3 to eliminate the denominator: $$10 \times 3 = 4x$$ $$30 = 4x$$ 4. Now, divide both sides by 4 to isolate $x$: $$x = \frac{30}{4}$$ 5. Simplify the fraction: $$x = \frac{15}{2} = 7.5$$ 6. Therefore, the solution is $x = 7.5$. This means when $x$ is 7.5, the original equation holds true.