3a -2b –[ 4a –{a +(b-2)} -4]
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Answer:
3
−
2
−
[
4
−
(
+
−
2
)
−
4
]
3a-2b-[4a-\left(a+b-2\right)-4]
3a−2b−[4a−(a+b−2)−4]
3
−
2
−
[
4
−
−
+
2
−
4
]
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