with the help of bracket multiply a.7×109 b.6×7+6×3
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I hope it would help you
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a)7*109
=(100-93)(100+9)
=100(100+9)-93(100-9)
=10000+900-9300-837
=10900-10137
=763
b)6*7+6*3
=6(7+3)
=6*10
=60
I hope it helps you :-)
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