Question

2,9-(х-6,7) с-(а+с)подобные слагаемые а)-18n-12+7n+6б)а+6-10а-2в)15х-1-19х+2г)- 5/9m+2/9mд)1/2а-1/12а

Answer 1

....................

Answer 2

To simplify the given expressions and combine like terms, let's work through each option:

а) 2n - 6.7

б) a + 6 - 10a - 2

в) 15x - 1 - 19x + 2

г) -5/9m + 2/9m

д) 1/2a - 1/12a

a) 2n - 6.7: There are no like terms to combine. The expression is already simplified.

б) a + 6 - 10a - 2: Combine the like terms (a and -10a) and the constants (6 and -2): a - 10a + 6 - 2 = -9a + 4

в) 15x - 1 - 19x + 2: Combine the like terms (15x and -19x) and the constants (-1 and 2): 15x - 19x - 1 + 2 = -4x + 1

г) -5/9m + 2/9m: Combine the like terms (-5/9m and 2/9m): -5/9m + 2/9m = (-5 + 2)/9m = -3/9m = -1/3m

д) 1/2a - 1/12a: Combine the like terms (1/2a and -1/12a): 1/2a - 1/12a = (6/12 - 1/12)a = 5/12a

So, the simplified expressions are:

а) 2n - 6.7 б) -9a + 4 в) -4x + 1 г) -1/3m д) 5/12a