3(9-5t)-5(9-10t)=7

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Solution for 3(9-5t)-5(9-10t)=7 equation:


Simplifying
3(9 + -5t) + -5(9 + -10t) = 7
(9 * 3 + -5t * 3) + -5(9 + -10t) = 7
(27 + -15t) + -5(9 + -10t) = 7
27 + -15t + (9 * -5 + -10t * -5) = 7
27 + -15t + (-45 + 50t) = 7

Reorder the terms:
27 + -45 + -15t + 50t = 7

Combine like terms: 27 + -45 = -18
-18 + -15t + 50t = 7

Combine like terms: -15t + 50t = 35t
-18 + 35t = 7

Solving
-18 + 35t = 7

Solving for variable 't'.

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

Add '18' to each side of the equation.
-18 + 18 + 35t = 7 + 18

Combine like terms: -18 + 18 = 0
0 + 35t = 7 + 18
35t = 7 + 18

Combine like terms: 7 + 18 = 25
35t = 25

Divide each side by '35'.
t = 0.7142857143

Simplifying
t = 0.7142857143

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