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abruzzese [7]
4 years ago
5

How many solutions does the equation have?6h−(9−3h)=6−3(h+2)

Mathematics
1 answer:
agasfer [191]4 years ago
3 0
<span>Answer:  The equation has ONE (1) solution;  which is:

h = </span><span>¾ ; or, write as:  0.75  .</span><span>
___________________________________________
Explanation:
______________________________________________________
Given the equation:
______________________________________________________
6h − (9 − 3h) = 6 − 3(h + 2) ;
______________________________________________________
Rewrite as:
______________________________________________________
</span>↔  6h − (-3h + 9) =  -3(h + 2) + 6 ;

  6h + 3h − 9 = -3(h + 2) + 6 ;

  6h + 3h − 9 =  - (3h + 3*2) + 6 ;

   9h − 9 =  - (3h + 6) + 6 ; 

   9h − 9 = - 3h − 6 + 6 ; 

   9h − 9 = -3h ; 

   (9h − 9) + (-9h) =  -3h + (-9h) ;

       9h − 9 − 9h =  -3h − 9h ;

       9h − 9h − 9 = -12h ; 

       -9 = - 12h ; 

↔   -12h = -9 ; 


-12h / -12 = -9 / -12 ; 

h = 9/12 = (9÷3)/(12÷3) = 3/4 ;

h = <span>¾ ; or, write as:  0.75.
</span>
This is the solution.   There is ONE (1) solution.
______________________________________________________

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