Respuesta :
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THEME: COMBINED EXERCISES
The negative sign in front of a parenthesis, in front of a bracket, or in front of a brace, CHANGES all the following signs:
(ab - 14bc +2) - (8ab+3bc -5) =
ab - 14bc +2 - 8ab- 3bc + 5 = change the signs
ab - 8ab - 14bc - 3bc + 2 + 5 = join like terms
- 7ab - 17bc + 7 = sort out
Final result is:
[tex]\boxed{ -7ab-17bc+7}[/tex]
꒰Piscis04꒱
Answer:
-7ab - 17bc + 7
Step-by-step explanation:
Subtract like terms. I've arranged the given terms as follows to make it easier to subtract:
(1)ab - 14bc + 2
- 8ab + 3bc - 5
-7ab -17bc + 7
The last term (7) is positive because its sign is negative. Since you're subtracting, you could apply the distributive law (which applies to its sign):
-(a + b) = -a - b.
Another way of solving this is:
(ab - 14bc +2) - (8ab+3bc -5)
= ab - 14bc +2 - 8ab - 3bc + 5
Rearrange the terms:
= ab - 8ab - 14bc - 3bc +2 + 5
Combine like terms:
= -7ab -17bc + 7