8(2.15)+7(s+z)=19.40

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Solution for 8(2.15)+7(s+z)=19.40 equation: 


Simplifying
8(2.15) + 7(s + z) = 19.40

Multiply 8 * 2.15
17.2 + 7(s + z) = 19.40
17.2 + (s * 7 + z * 7) = 19.40
17.2 + (7s + 7z) = 19.40

Solving
17.2 + 7s + 7z = 19.40

Solving for variable 's'.

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

Add '-17.2' to each side of the equation.
17.2 + 7s + -17.2 + 7z = 19.40 + -17.2

Reorder the terms:
17.2 + -17.2 + 7s + 7z = 19.40 + -17.2

Combine like terms: 17.2 + -17.2 = 0.0
0.0 + 7s + 7z = 19.40 + -17.2
7s + 7z = 19.40 + -17.2

Combine like terms: 19.40 + -17.2 = 2.2
7s + 7z = 2.2

Add '-7z' to each side of the equation.
7s + 7z + -7z = 2.2 + -7z

Combine like terms: 7z + -7z = 0
7s + 0 = 2.2 + -7z
7s = 2.2 + -7z

Divide each side by '7'.
s = 0.3142857143 + -1z

Simplifying
s = 0.3142857143 + -1z

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