Answer:
x = 2/33
Explanation:
21 x 2 - 21 x x + 12 x x = 44
42 - 21x + 12x = 44
42 - 33x = 44
-33x = 44 +42
-33x = 86
x = -86/33
PS: I am not sure of the answer, but the steps should be reliable
21(2 - x) + 12x = 44
42-21x+12x=44
42-9x=44
-42 -42
-9x=2
X=-2/9
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