Lindsey made an error while solving the equation 143.5 = 2 - 7(x + 3). What line has the error?

A.143.5=2-7(x+3)

B.143.5=2+7x-21(step 1)

C.143.5=7x-19(step 2)

D.162.5=7x(step3)

E.23.214=x(step 4)

Find the smallest number by which the given number should be divided to make a perfect cube(with steps or the answer will get reported) a.108 b.2187

What is the value of x when x + 7 = 21?

Given the system of equations presented here: 2x + 4y = 14 4x + y = 20 which of the following actions creates an equivalent system such that, when combined with the other equation, one of the variables is eliminated? multiply the second equation by â’4 to get â’16x â’ 4y = â’80 multiply the second equation by â’1 to get â’4x â’ y = â’20 multiply the first equation by 2 to get 4x + 8y = 28 multiply the first equation by â’1 to get â’2x â’ 4y = â’14