Вычислите самым удобным способом значение выражения:1) 359*a 641*17 при a =17;2) 769 *87 - 87 b при b =369. Вычислите самым удоб

37*218+63*218 = 218(37+63) = 218*100 = 21800

568*43-566*43= 43(568-566) = 43*2 = 86

<span>417*187+417*213 = 417(187+213)=417*400 = 166800</span>

<span><span>52*187-52*43-52*44 = 52(187-43-44) = 52* 100 = 5200</span></span>

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<span><span>при а=17:     <span>359*a+641*17=359*17+641*17=17(359+641)=17*1000=17000</span></span></span>

<span><span>при b=369:   <span>769 *87 - 87 b = <span>769 *87 - 87*369 = 87(769-369) = 87*400=34800</span></span></span></span>

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