4 over 3x-1 equals 2 over x+3
And the answer is 7

2(3x - 1) = 4(x + 3) ---- Cross-multiplying since each side CONTAINS ONE (1) fraction
6x - 2 = 4x + 12
6x - 4x = 12 + 2
2x = 14
, or 
You can do the check!!
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