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QveST [7]
3 years ago
12

Four less than nine times a number is one hundred twenty-two. Find the original number.

Mathematics
1 answer:
Tasya [4]3 years ago
3 0

Answer:

The number is 14

Step-by-step explanation:

Denote the original number by z. The expression "Four less than nine times a number is one hundred twenty-two" can be rewritten in an equation.

Our number is z, then the left hand side of the equation is 9z-4.

The right side of the equation is 122. Then the complete equation is 9z-4=122. Add 4 in both sides to get 9z=122+4=126. Now, divide by 9 in both sides to get z=\frac{126}{9}=14

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