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t_{15}-166
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t_{15}-166
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4-\left(120-t_{15}-\left(-50\right)\right)
Subtract 100 from 50 to get -50.
4-\left(120-t_{15}+50\right)
The opposite of -50 is 50.
4-120-\left(-t_{15}\right)-50
To find the opposite of 120-t_{15}+50, find the opposite of each term.
-116-\left(-t_{15}\right)-50
Subtract 120 from 4 to get -116.
-116+t_{15}-50
The opposite of -t_{15} is t_{15}.
-166+t_{15}
Subtract 50 from -116 to get -166.
4-\left(120-t_{15}-\left(-50\right)\right)
Subtract 100 from 50 to get -50.
4-\left(120-t_{15}+50\right)
The opposite of -50 is 50.
4-120-\left(-t_{15}\right)-50
To find the opposite of 120-t_{15}+50, find the opposite of each term.
-116-\left(-t_{15}\right)-50
Subtract 120 from 4 to get -116.
-116+t_{15}-50
The opposite of -t_{15} is t_{15}.
-166+t_{15}
Subtract 50 from -116 to get -166.
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