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4. Find the sum of: (a) 137 and – 354 (b) – 52 and 52 (c) – 312, 39 and 192 (d) – 50, – 200 and 300 |
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Answer» (a) 137 and -354(137) + (-354) = (137) + (-137) + (-217)= 0 + (-217) [(137) + (-137) = 0]= (-217)= -217(b) -52 and 52(-52) + (+52) = 0 [(-a) + (+a) = 0](C) -312, 39 and 192(-312) + (+39) + (+192) = (-231) + (-81) + (+39) + (+192)= (-231) + (-81) + (+231)= (-231) + (+231) + (-81)= 0 + (-81) [(-a) + (+a) = 0]= -81(d) -50, -200 and 300(-50) + (-200) + (+300) = (-50) + (-200) + (+200) + (+100)= (-50) + 0 + (+100) [(-a) + (+a) = 0]= (-50) + (+100)= (-50) + (+50) + (+50)= 0 + (+50) [(-a) + (+a) = 0]= 50hope it helps you please make me as BRAINIST |
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