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