QuestionAugust 26, 2025

Solve the proportion If necessary, round to the nearest hundredth. (2z-4)/(5)=(3z+3)/(10) z= square

Solve the proportion If necessary, round to the nearest hundredth. (2z-4)/(5)=(3z+3)/(10) z= square
Solve the proportion If necessary, round to the nearest hundredth.
(2z-4)/(5)=(3z+3)/(10)
z= square

Solution
4.1(381 votes)

Answer

z = 11 Explanation 1. Cross-multiply Multiply both sides by 10 to eliminate the denominators: 10 \cdot \frac{2z-4}{5} = 10 \cdot \frac{3z+3}{10}. 2. Simplify the equation This results in 2(2z - 4) = 3z + 3. 3. Distribute and simplify Distribute on the left side: 4z - 8 = 3z + 3. 4. Isolate variable z Subtract 3z from both sides: z - 8 = 3. 5. Solve for z Add 8 to both sides: z = 11.

Explanation

1. Cross-multiply<br /> Multiply both sides by 10 to eliminate the denominators: $10 \cdot \frac{2z-4}{5} = 10 \cdot \frac{3z+3}{10}$.<br />2. Simplify the equation<br /> This results in $2(2z - 4) = 3z + 3$.<br />3. Distribute and simplify<br /> Distribute on the left side: $4z - 8 = 3z + 3$.<br />4. Isolate variable $z$<br /> Subtract $3z$ from both sides: $z - 8 = 3$.<br />5. Solve for $z$<br /> Add 8 to both sides: $z = 11$.
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