Solution - Adding, subtracting and finding the least common multiple
Other Ways to Solve:
Step by Step Solution
Rearrange:
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
1/4*k-(3*(-1/4*k+3))=0
Step by step solution :
Step 1 :
1
Simplify —
4
Equation at the end of step 1 :
1 1
(—•k)-(3•((0-(—•k))+3)) = 0
4 4
Step 2 :
Rewriting the whole as an Equivalent Fraction :
2.1 Adding a whole to a fraction
Rewrite the whole as a fraction using 4 as the denominator :
3 3 • 4
3 = — = —————
1 4
Equivalent fraction : The fraction thus generated looks different but has the same value as the whole
Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator
Adding fractions that have a common denominator :
2.2 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:
-k + 3 • 4 12 - k
—————————— = ——————
4 4
Equation at the end of step 2 :
1 (12 - k)
(— • k) - (3 • ————————) = 0
4 4
Step 3 :
Equation at the end of step 3 :
1 3 • (12 - k)
(— • k) - ———————————— = 0
4 4
Step 4 :
1
Simplify —
4
Equation at the end of step 4 :
1 3 • (12 - k)
(— • k) - ———————————— = 0
4 4
Step 5 :
Adding fractions which have a common denominator :
5.1 Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
k - (3 • (12-k)) 4k - 36
———————————————— = ———————
4 4
Step 6 :
Pulling out like terms :
6.1 Pull out like factors :
4k - 36 = 4 • (k - 9)
Equation at the end of step 6 :
k - 9 = 0
Step 7 :
Solving a Single Variable Equation :
7.1 Solve : k-9 = 0
Add 9 to both sides of the equation :
k = 9
One solution was found :
k = 9How did we do?
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