x = 7/10 = 0.700
Step-by-step explanation:
Step  1  :
      5
Simplify  —
      6
Equation at the end of step  1  :
 7   5
 —— -  (— • x)  = 0
 12   6
Step  2  :
      7
Simplify  ——
      12
Equation at the end of step  2  :
 7   5x
 —— -  ——  = 0
 12   6
Step  3  :
Calculating the Least Common Multiple :
3.1 Â Â Find the Least Common Multiple
   The left denominator is :    12
   The right denominator is :    6
    Number of times each prime factor
    appears in the factorization of:
Prime
Factor  Left
Denominator  Right
Denominator  L.C.M = Max
{Left,Right}
2212
3111
Product of all
Prime Factors  12612
   Least Common Multiple:
   12
Calculating Multipliers :
3.2 Â Â Calculate multipliers for the two fractions
 Left_M = L.C.M / L_Deno = 1
 Right_M = L.C.M / R_Deno = 2
Making Equivalent Fractions :
3.3 Â Â Â Rewrite the two fractions into equivalent fractions
Two fractions are called equivalent if they have the same numeric value.
For example :  1/2  and  2/4  are equivalent,  y/(y+1)2  and  (y2+y)/(y+1)3  are equivalent as well.
To calculate equivalent fraction , multiply the Numerator of each fraction, by its respective Multiplier.
 L. Mult. • L. Num.    7
 ——————————————————  =  ——
    L.C.M       12
 R. Mult. • R. Num.    5x • 2
 ——————————————————  =  ——————
    L.C.M        12 Â
Adding fractions that have a common denominator :
3.4 Â Â Â Adding up the two equivalent fractions
Add the two equivalent fractions which now have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
7 - (5x • 2)   7 - 10x
————————————  =  ———————
   12       12 Â
Equation at the end of step  3  :
 7 - 10x
 ———————  = 0
  12 Â
Step  4  :
When a fraction equals zero :
4.1 Â Â When a fraction equals zero ...
Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.
Now,to get rid of the denominator, multiplys both sides of the equation by the denominator.
Here's how:
 7-10x
 ————— • 12 = 0 • 12
 12 Â
Now, on the left hand side, the  12  cancels out the denominator, while, on the right hand side, zero times anything is still zero.
The equation now takes the shape :
 7-10x  = 0
Solving a Single Variable Equation :
4.2    Solve  :   -10x+7 = 0
Subtract  7  from both sides of the equation :
           -10x = -7
Multiply both sides of the equation by (-1) : Â 10x = 7
Divide both sides of the equation by 10:
          x = 7/10 = 0.700
One solution was found :
         x = 7/10 = 0.700
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