What is the place value of 7123818712?

I have no idea which number is underlined, so I will give you ALL of their place values...

7,123,818,712 = 7,000,000,000

7,123,818,712 = 100,000,000

7,123,818,712 = 20,000,000

7,123,818,712 = 3,000,000

7,123,818,712 = 800,000

7,123,818,712 = 10,000

7,123,818,712 = 8,000

7,123,818,712 = 700

7,123,818,712 = 10

7,123,818,712 = 2

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arrange the equations with like terms in columns.

analyze the coefficients of x or y.

add the equations and solve for the remaining variable.

substitute the value into either equation and solve.

check the solution.

step-by-step explanation:

a

step-by-step explanation:

strong negative correlation