.85t+.15(100-t)=.67(100)

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Solution for .85t+.15(100-t)=.67(100) equation:


Simplifying
0.85t + 0.15(100 + -1t) = 0.67(100)
0.85t + (100 * 0.15 + -1t * 0.15) = 0.67(100)
0.85t + (15 + -0.15t) = 0.67(100)

Reorder the terms:
15 + 0.85t + -0.15t = 0.67(100)

Combine like terms: 0.85t + -0.15t = 0.7t
15 + 0.7t = 0.67(100)

Multiply 0.67 * 100
15 + 0.7t = 67

Solving
15 + 0.7t = 67

Solving for variable 't'.

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

Add '-15' to each side of the equation.
15 + -15 + 0.7t = 67 + -15

Combine like terms: 15 + -15 = 0
0 + 0.7t = 67 + -15
0.7t = 67 + -15

Combine like terms: 67 + -15 = 52
0.7t = 52

Divide each side by '0.7'.
t = 74.28571429

Simplifying
t = 74.28571429

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