If 3x=20, then x=20/3 or approximately 6.67
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2 x 2 x 5
X * 3 = 42 X = 42/3 X = 14
'20 squared' simply means 20 multiplied by itself (20 x 20). This equals 400.
1 x 39, 3 x 13, 13 x 3, 39 x 1
1 x 249, 3 x 83, 83 x 3, 249 x 1