120t+130(7-t)=880

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Solution for 120t+130(7-t)=880 equation:


Simplifying
120t + 130(7 + -1t) = 880
120t + (7 * 130 + -1t * 130) = 880
120t + (910 + -130t) = 880

Reorder the terms:
910 + 120t + -130t = 880

Combine like terms: 120t + -130t = -10t
910 + -10t = 880

Solving
910 + -10t = 880

Solving for variable 't'.

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

Add '-910' to each side of the equation.
910 + -910 + -10t = 880 + -910

Combine like terms: 910 + -910 = 0
0 + -10t = 880 + -910
-10t = 880 + -910

Combine like terms: 880 + -910 = -30
-10t = -30

Divide each side by '-10'.
t = 3

Simplifying
t = 3

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