Zapisz w jak najprostszej postaci: a) -x-4(1-x) b) 3(5x-2)-5(3-4x) c) √2(3-x)-2(1-x√2)
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Hi!
We can see the river is a straight line.
This means that the angles that fall upon it are supplementary angles, and will add up to 180 degrees.
Therefore:
Combine like terms:
Subtract 21 from both sides:
Divide both sides by 3:
Therefore, the value of x is 53 degrees.