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4a-14-a-5
4a-a-14-5
3a-19
b. (5b-3)-(3b-7)
5b-3-3b+7
5b-3b-3+7
2b+4
c. (8c-5)-(2c+13)
8c-5-2c-13
8c-2c-5-13
6c-18
d. 3(a+4b-8)-2(2a-3b+4)
3a+12b-24-4a+6b-8
3a-4a+12b+6b-24-8
-a+18b-32
e. 7(2a²+a+4)-5(a²+2a-3)
14a²+7a+28-5a²-10a+15
14a²-5a²+7a-10a+28+15
9a²-3a+43
b. ( 5b - 3 ) - ( 3b - 7 ) = 5b - 3 - 3b + 7 = 5b - 3b - 3 + 7 = 2b +4
c. ( 8c - 5 ) - ( 2c + 13 ) = 8c - 5 - 2c - 13 = 8c - 2c - 5 - 13 = 6c - 18
d. 3 ( a + 4b - 8 ) - 2 ( 2a - 3b + 4 ) =
3a + 12b - 24 - 4a + 6b - 8 =
3a - 4a + 12b + 6b - 24 - 8 =
a + 18b - 32
e. 7 ( 2a² + a + 4 ) - 5 ( a² + 2a - 3 ) =
14a² + 7a + 28 - 5a² - 10a + 15 =
14a² - 5a² + 7a - 10a + 28 + 15 =
9a² - 3a + 43