Factor out 4x first
4x(6x² + x - 1)
factor the rest as normal, knowing that what adds to give the middle term multiplies to give the last term.
4x(2x + 1)(3x - 1)
To find a mixed number, take just divide the numerator by the denominator.
36/11 = 3 (with three remaining)
3 is the whole number, and if there's any remaining, put it in the numerator. So the answer is 3 3/11
Hope this helps! :)
Remark
JK is going to be twice LM
Find x first.
Solve for LM
JK = 2 * LM
Equation
3x + 4 = 7x Subtract 3x from both sides.
4 = 7x - 3x
4 = 4x Divide by 4
4x/4 = 4/4
x = 1
Solve for LM
LM = 2x + 6
LM = 2(1) + 6
LM = 2 + 6
LM = 8
Find JK
JK = 2*LM
JK = 2 * 8
JK = 16
Question why is JK = 2 * LM?
D <<<< Answer
Let the new price of shoe before discount is “x”
75% of x = 60$
75/100x = $ 60
x = 60*100/75
x = $80
Therefore, the revised shoe price before discount should be $80, so that he can still get $60 even if he gives 25% discount.