Question

Which two steps should be used first in solving the system of equations

by substitution?
6y - 4x = 22
y + 2x = 9
A. Multiply the first equation by 4 and the second equation by 2.
B. Solve the second equation for y and then substitute this value into the first
equation.
C. Subtract the terms in the second equation from the first equation and then
solve for y.
D. Substitute 9 for y in the first equation and then solve the other equation for x.

Answer 1

first step : option B

second step : option D

Explanation:

• first, Solve the second equation for y and then substitute this value into the first equation.

• after this, you will get the value of y then substitute this value in of the equations to get x.

• so, option B will be the first step to solve and option D is the second step.

• the other two steps are wrong.

• this is a standard way to solve any 2 given equations with 2 variables.