Question

Помогите пожалуйста

Answer 1

а) 743а - (159600÷40 + 7899) = 743а - 3990 - 7899 = 743а - 11889;
▪743а - 11889 = 743 × 800 - 11889 = 594400 - 11889 = 582511
▪743а - 11889 = 743 × 630 - 11889 = 468090 - 11889 = 456201

ə) 8900 × 60 - b ÷ 80 = 534000 - b ÷ 80
▪534000 - b ÷ 80 = 534000 - 195760 ÷ 80 = 534000 - 2447 = 531553
▪534000 - b ÷ 80 = 534000 - 655440 ÷ 80 = 534000 - 8193 = 525807

б) x - 670 × 94 + 75880 ÷ 7 = x - 62980 + 10840 = x - 52140
▪x - 52140 = 129689 - 52140 = 77549
▪x - 52140 = 83000 - 52140 = 30860

в) (600000 - 986750 ÷ 50) × у = (600000 - 19735) × у = 580265у
▪580265у = 580265 × 47 = 27272455
▪580265у = 580265 × 600 = 348159000

г) х - 23986 + 648 × 4300 = х - 23986 + 2786400 = х + 2762414
▪х + 2762414 = 800000 + 2762414 = 3562414
▪х + 2762414 = 93000 + 2762414 = 2855414

г) (2032456 - 1456987) × а - 2369265 = 575469а - 2369265
▪575469а - 2369265 = 575469 × 69 - 2369265 = 39707361 - 2369265 = 37338096

д) (77838 + 3702) ÷ (280с - 224214) × 30 = 81540 ÷ (8400с - 6726420) = 81540 ÷ (8400 × 804 - 6726420) = 81540 ÷ (6753600 - 6726420) = 81540 ÷ 27180 = 3

е) 5207 × 96 + 4571040 ÷ b - (900 × 4000 - 3093518) = 499872 + 4571040 ÷ b - (3600000 - 3093518) = 499872 + 4571040 ÷ 534 - 506482 = -6610 + 8560 = 8560 - 6610 = 1950

ж) (325х - 91 × 250) ÷ 56938 = (325 × 70 - 22750) ÷ 56938 = (22750 - 22750) ÷ 56938 = 0 ÷ 56938 = 0

з) 873200 ÷ 8732 × (1922800 ÷ с) = 100 × (1922800 ÷ с) = 100 × 50600 = 5060000.