Solve for x
x=\frac{3}{38}\approx 0.078947368
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4x+3=42x
Multiply 21 and 2 to get 42.
4x+3-42x=0
Subtract 42x from both sides.
-38x+3=0
Combine 4x and -42x to get -38x.
-38x=-3
Subtract 3 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-3}{-38}
Divide both sides by -38.
x=\frac{3}{38}
Fraction \frac{-3}{-38} can be simplified to \frac{3}{38} by removing the negative sign from both the numerator and the denominator.
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