Answer:
M = -7/5
Step-by-step explanation:
(m2 + 14m +31) = (m + 10)
14 + 2
16m+31=m+10
Subtract 31 from both sides
16m + 31 - 31 = m + 10 - 31
Simplify
16 = m -21
Subtract m from both sides
16m - m = m - 21 - m
Simplify again
15m = -21
Divide both sides by 15
15m/15 = -21/15
Simplify last
M = -7/5
Decimal form: M = -1.4
