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Practice
Simplify the expressions below.a)
x19
x16
x-3
x19
b)
x15
x7
x-8
x15
c)
y-17
y-9
y8
y-17
d)
m15
m19
m4
m15
e)
x9
x19
x10
x9
f)
m10
m14
m4
m10
g)
m-5
m2
m7
m-5
h)
m21
m20
m-1
m21
i)
r-16
r-6
r10
r-16
j)
q-11
q-8
q3
q-11