S(7)=0.04(7)3+0.8(7)2+8(7)+9

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Solution for S(7)=0.04(7)3+0.8(7)2+8(7)+9 equation: 


Simplifying
S(7) = 0.04(7) * 3 + 0.8(7) * 2 + 8(7) + 9

Reorder the terms for easier multiplication:
7S = 0.04(7) * 3 + 0.8(7) * 2 + 8(7) + 9

Multiply 0.04 * 7
7S = 0.28 * 3 + 0.8(7) * 2 + 8(7) + 9

Multiply 0.28 * 3
7S = 0.84 + 0.8(7) * 2 + 8(7) + 9

Multiply 0.8 * 7
7S = 0.84 + 5.6 * 2 + 8(7) + 9

Multiply 5.6 * 2
7S = 0.84 + 11.2 + 8(7) + 9

Multiply 8 * 7
7S = 0.84 + 11.2 + 56 + 9

Combine like terms: 0.84 + 11.2 = 12.04
7S = 12.04 + 56 + 9

Combine like terms: 12.04 + 56 = 68.04
7S = 68.04 + 9

Combine like terms: 68.04 + 9 = 77.04
7S = 77.04

Solving
7S = 77.04

Solving for variable 'S'.

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

Divide each side by '7'.
S = 11.00571429

Simplifying
S = 11.00571429

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