state the property which is a reason for each statement.
a. if a<0 and b> 0, then a<b.
b. if x>7, then x is not equal to 7.
c. if 5>9 and 2<3, then 7<12.
d. if m = 10 and n= 6, then m+n = 6
e. if squareroot of a = 5 is true, then square root of a + 4 is false
c.subtraction property of equality
d.addition property of equality
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