For example:
(4/9) x=8
Now can solve this equation multiplying each side by 9/4.
(9/4)(4/9)x=(9/4)8
x=18
To check:
(4/9)(18)=(4*18)/9=72/9=8
Answer: 3
Formula: 21/7=3 3+7=10
The correct answer is: [A]: " x = 3 " .
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