Solve the system of equations.
1 answer:
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Answer:
The number is
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 . Add 4 in both sides to get
. Now, divide by 9 in both sides to get
Square the -5 then use substitution (just combine the numbers)
