a+(n-8)d=l

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Solution for a+(n-8)d=l equation:


Simplifying
a + (n + -8) * d = l

Reorder the terms:
a + (-8 + n) * d = l

Reorder the terms for easier multiplication:
a + d(-8 + n) = l
a + (-8 * d + n * d) = l
a + (-8d + dn) = l

Solving
a + -8d + dn = l

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '8d' to each side of the equation.
a + -8d + 8d + dn = 8d + l

Combine like terms: -8d + 8d = 0
a + 0 + dn = 8d + l
a + dn = 8d + l

Add '-1dn' to each side of the equation.
a + dn + -1dn = 8d + -1dn + l

Combine like terms: dn + -1dn = 0
a + 0 = 8d + -1dn + l
a = 8d + -1dn + l

Simplifying
a = 8d + -1dn + l

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