The equation (M + )/21 = (p – 7)/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale? Options:	A) P	B) P-7	C) P-8	D) P-6	E) P-5
M/21 =(P-7)/21   M = (P-7)*21/21   =(P-7)*1 = P-7   P-7
<result>B</result>
The equation (M + )/21 = (p – 7)/21 relates two temperature scales, where M is the number of degrees on one scale and P is the number of degrees on the other scale. Which of the following equations can be used to convert temperatures from the P scale to the M scale?