Mathematics
Solve:
(a) 6x + (9x − 2x)
(b) 11y + 2y + 3x
(c) 11z + 3z + z
(d) 8ab + (−3ab)
(e) 3x − 4x + 7x
(f) 35b − (16b + 9b)
(g) (9a − 3a) + 4a
Algebra Basics
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Answer
(a) 6x + (9x − 2x) = 6x + 7x = 13x.
(b) 11y + 2y + 3x = 13y + 3x = 13y + 3x.
(c) 11z + 3z + z = (11 + 3 + 1)z = 15z.
(d) 8ab + (−3ab) = (8 − 3)ab = 5ab.
(e) 3x − 4x + 7x = (3 − 4 + 7)x = 6x.
(f) 35b − (16b + 9b) = 35b − 25b = 10b.
(g) (9a − 3a) + 4a = 6a + 4a = 10a.
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