.07(15)=.06c+.09(15-c)

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Solution for .07(15)=.06c+.09(15-c) equation:


Simplifying
0.07(15) = 0.06c + 0.09(15 + -1c)

Multiply 0.07 * 15
1.05 = 0.06c + 0.09(15 + -1c)
1.05 = 0.06c + (15 * 0.09 + -1c * 0.09)
1.05 = 0.06c + (1.35 + -0.09c)

Reorder the terms:
1.05 = 1.35 + 0.06c + -0.09c

Combine like terms: 0.06c + -0.09c = -0.03c
1.05 = 1.35 + -0.03c

Solving
1.05 = 1.35 + -0.03c

Solving for variable 'c'.

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

Add '0.03c' to each side of the equation.
1.05 + 0.03c = 1.35 + -0.03c + 0.03c

Combine like terms: -0.03c + 0.03c = 0.00
1.05 + 0.03c = 1.35 + 0.00
1.05 + 0.03c = 1.35

Add '-1.05' to each side of the equation.
1.05 + -1.05 + 0.03c = 1.35 + -1.05

Combine like terms: 1.05 + -1.05 = 0.00
0.00 + 0.03c = 1.35 + -1.05
0.03c = 1.35 + -1.05

Combine like terms: 1.35 + -1.05 = 0.3
0.03c = 0.3

Divide each side by '0.03'.
c = 10

Simplifying
c = 10

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