\left( 68+2d \right) 68+d = 122
Solve for d
d = -\frac{4502}{137} = -32\frac{118}{137} \approx -32.861313869
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4624+136d+d=122
Use the distributive property to multiply 68+2d by 68.
4624+137d=122
Combine 136d and d to get 137d.
137d=122-4624
Subtract 4624 from both sides.
137d=-4502
Subtract 4624 from 122 to get -4502.
d=\frac{-4502}{137}
Divide both sides by 137.
d=-\frac{4502}{137}
Fraction \frac{-4502}{137} can be rewritten as -\frac{4502}{137} by extracting the negative sign.
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