№ 599
24a + 47a +
53a + 76a , если а =47
( 24 + 47 +
53 + 76 ) * 47 = 200 * 47 = 9 400
128p -72p –
28 p, если p =11
( 128 – 72 -28 ) * 11 = 28 * 11 = 308
№ 597
а). (30 -2 ) * 5 = 150 – 10 = 140
б). 7 * (60 – 2 ) = 420 – 14 = 406
в). 85 *137 – 75 * 137 = (85 – 75 ) * 137 = 10 * 137 = 1370
г). 78 *214 – 78 * 204 = 78 * ( 214 – 204 ) = 78 * 10 = 780