Which of the following ratios forms a proportion? select yes or no. a. 28/49 ≟ 4/7 yes no b. 4/7 ≟ 16/28 yes no c. 4/7 ≟ 16/35 yes no d. 4/7 ≟ 20/25 yes no

4/7 is a proportion to 16/28 because when you multiply both sides by 4 (4/4) you get 16 16/28. C & D are incorrect because 4/7 does not equal 16/35 or 20/25. A. & C are correct because you multiply (B.) or divide (A.) the numerator and denominator by (4/4) to get the right side of the equation.

So A & B are YES. C & D are NO

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:

1 + (6 / x - 1)

step-by-step explanation:

divide using polynomial division.