(-3)×(-1) {3×(-5)+2 (3×5-4-7)}
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=(-3 x -1) { (-15) + 2 (15 - 11) }
=3 x { (-15) + 2(4) }
=3 x { (-15) + 8 }
=3 x ( -7 )
= -21
hope it would help u
=3 x { (-15) + 2(4) }
=3 x { (-15) + 8 }
=3 x ( -7 )
= -21
hope it would help u
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