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3 years ago

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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