79
2
3. Solve these equations by trial and error method.
=9
(a) = 12
(a) x + 4 = 7
(c) 9-x=3
(b) 2x = 18
:9
bod
X/4=12
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Answer:
b- bracket
o- of
d- division
m- multiplication
a- addition
s- substraction
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