Question

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Answer 1

• 
  `\boxed{\sf{x=24}}`

Explanation:

GIVEN:

To find the missing number in the proportion, you have to isolate it the term of x from one side of the equation.

`\sf{(8)/(7)=(x)/(21) }`

First, thing you do is switch sides.

`\sf{(x)/(21)=(8)/(7) }`

Multiply by 21 from both sides.

`\Longrightarrow: \sf{(21x)/(21)=(8*21)/(7) }`

Solve.

Multiply the numbers from left to right.

Use the order of operations.

PEMDAS stands for:

• Parentheses
• Exponents
• Multiply
• Divide
• Add
• Subtract

`\Longrightarrow: \sf{(8*21)/(7)=(168)/(7)=24 }`

`\Longrightarrow: \boxed{\sf{x=24}}`

• Therefore, the final answer is x=24.

I hope this helps. Let me know if you have any questions.