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2-\left(-a\right)-\left(-b\right)-c-\left(b+a\right)-c
To find the opposite of -a-b+c, find the opposite of each term.
2-\left(-a\right)+b-c-\left(b+a\right)-c
The opposite of -b is b.
2-\left(-a\right)+b-c-b-a-c
To find the opposite of b+a, find the opposite of each term.
2-\left(-a\right)-c-a-c
Combine b and -b to get 0.
2-\left(-a\right)-2c-a
Combine -c and -c to get -2c.
2+a-2c-a
Multiply -1 and -1 to get 1.
2-2c
Combine a and -a to get 0.
2-\left(-a\right)-\left(-b\right)-c-\left(b+a\right)-c
To find the opposite of -a-b+c, find the opposite of each term.
2-\left(-a\right)+b-c-\left(b+a\right)-c
The opposite of -b is b.
2-\left(-a\right)+b-c-b-a-c
To find the opposite of b+a, find the opposite of each term.
2-\left(-a\right)-c-a-c
Combine b and -b to get 0.
2-\left(-a\right)-2c-a
Combine -c and -c to get -2c.
2+a-2c-a
Multiply -1 and -1 to get 1.
2-2c
Combine a and -a to get 0.