Let x represent the number. Use the given conditions to write an equation. Solve the equation and find the number.When 4 times a number is subtracted from 7 times the number, the result is 30. Find the number.
A. 7x - 4x = 30; 10
B. 4(x - 7) = 30x; 0.9
C. 4x + 10x = 30; 3
D. 4x(7 - x) = 30; -10
Answer: A
Mathematics
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