Question

If ML= 4X+22, LN= 8X-7 and MN= 7X+20, find X?

Answer 1

1

Explanation:

Note that: ML + LN = MN

Plug in the corresponding measurements for each variable(s)

ML + LN = MN

(4x + 22) + (8x - 7) = 7x + 20

Combine like terms

12x + 15 = 7x + 20

Isolate the x. Subtract 7x and 15 from both sides

12x (-7x) + 15 (-15) = 7x (-7x) + 20 (-15)

12x - 7x = 20 - 15

5x = 5

Isolate the x. Divide 5 from both sides

5x/5 = 5/5

x = 5/5

x = 1

1 is your answer for x.

~