6. If linear combination is the method used to solve this system of equations, what is the result of the first step? x + y = 6
x - y = 2

A. 2y = 8
B. 2x = 8
C. x + y = 8
D. x - y = 8

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One number is 4 less than 3 times a second number. if 3 more than two times the first number is decreased by 2 times the second number, the result is 11. use the substitution method. what is the first number?

Using the figure below, select the two pairs of alternate interior angles.a: point 1 and point 4 b : point 2 and point 3 c: point 6 and point 6d: point 5 and point 7