Can someone help plz

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 y 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:

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