2000=200+90(t-70)

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Solution for 2000=200+90(t-70) equation: 


Simplifying
2000 = 200 + 90(t + -70)

Reorder the terms:
2000 = 200 + 90(-70 + t)
2000 = 200 + (-70 * 90 + t * 90)
2000 = 200 + (-6300 + 90t)

Combine like terms: 200 + -6300 = -6100
2000 = -6100 + 90t

Solving
2000 = -6100 + 90t

Solving for variable 't'.

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

Add '-90t' to each side of the equation.
2000 + -90t = -6100 + 90t + -90t

Combine like terms: 90t + -90t = 0
2000 + -90t = -6100 + 0
2000 + -90t = -6100

Add '-2000' to each side of the equation.
2000 + -2000 + -90t = -6100 + -2000

Combine like terms: 2000 + -2000 = 0
0 + -90t = -6100 + -2000
-90t = -6100 + -2000

Combine like terms: -6100 + -2000 = -8100
-90t = -8100

Divide each side by '-90'.
t = 90

Simplifying
t = 90

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