Which of these is the algebraic expression for "nine less than some number?"
2 answers:
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Answer:
A.) 2x - 9x - 30 = -6
Step-by-step explanation:
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to solve this system of equations, first, we substitute the equation to the <em>y </em>variable in the equation
. Therefore, we get:
now, we simplify by multiplying -3 to the variables inside the parenthesis, which, in short, is also called the distributive property. thus, we get:
