1. 3f + 6
2. 12ab - 11a
3. 1t - 12r
4. 3a -1b
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Answer:
-3f + 6
12ab - 11a
t - 12
-3a - b
Step-by-step explanation:
3f + 10 -6f -4 Combine like terms
(3f -6f) +( 10-4)
-3f + 6
7ab - 2a + 5ab - 9a
(7ab + 5ab) + (-2a - 9a)
12ab + -11a Adding a negative is the same as subtracting a positive
12ab - 11a
-2t - 8r + 3t - 4r
(-2t + 3t) + (-8r - 4r)
t + -12r
t - 12
2a + 9b - 5a - 10b
(2a - 5a) + ( 9b -10b)
-3a - b
