Answer:
1
Step-by-step 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.
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