5. Решите уравнение:x+9 7/10=28 2/15 б)11 3/4-y=5 15/34 в)7 27/44+a=18 51/55 г)6 3/11+b=11 93/121 д)9 5/36-x=2 4/9 e)k-5 17/60=7 9/20. ПЛИС ОТВЕТ СРОЧНО НУЖНО
Ответы
Ответ:
Пошаговое объяснение:
а) x = 28 2/15 - 9 7/10
x = 28 2/15 - 9 7/10 = (28 + 2/15) - (9 + 7/10)
x = 28 2/15 - 9 7/10 = 28 - 9 + 2/15 - 7/10
x = 19 + 2/15 - 7/10
x = 19 + (4/60) - (21/60)
x = 19 - 17/60
x = 19 - 17/60 = 19 - 0.2833
x ≈ 18.7167
б) y = 11 3/4 - 5 15/34
y = 11 3/4 - 5 15/34 = (11 + 3/4) - (5 + 15/34)
y = 11 3/4 - 5 15/34 = 11 - 5 + 3/4 - 15/34
y = 6 + 3/4 - 15/34
y = 6 + (17/68) - (60/68)
y = 6 + (17 - 60)/68
y = 6 + (-43/68)
y = 6 - 43/68
y = 6 - 0.6324
y ≈ 5.3676
в) a = 18 51/55 - 7 27/44
a = 18 51/55 - 7 27/44 = (18 + 51/55) - (7 + 27/44)
a = 18 51/55 - 7 27/44 = 18 - 7 + 51/55 - 27/44
a = 11 + 51/55 - 27/44
a = 11 + (968/968) * (51/55) - (1210/1210) * (27/44)
a = 11 + (51 * 44)/(55 * 968) - (27 * 55)/(44 * 1210)
a = 11 + 2244/53120 - 1485/53240
a = 11 + (2244 - 1485)/53120
a = 11 + 759/53120
a = 11 + 0.0143
a ≈ 11.0143
г) b = 11 93/121 - 6 3/11
b = 11 93/121 - 6 3/11 = (11 + 93/121) - (6 + 3/11)
b = 11 93/121 - 6 3/11 = 11 - 6 + 93/121 - 3/11
b = 5 + 93/121 - 3/11
b = 5 + (93 * 11)/(121 * 11) - (121 * 3)/(11 * 121)
b = 5 + 1023/1331 - 363/1331
b = 5 + (1023 - 363)/1331
b = 5 + 660/1331
b = 5 + 0.4969
b ≈ 5.4969
д) x = 9 5/36 - 2 4/9
x = 9 5/36 - 2 4/9 = (9 + 5/36) - (2 + 4/9)
x = 9 5/36 - 2 4/9 = 9 - 2 + 5/36 - 4/9
x = 7 + 5/36 - 4/9
x = 7 + (5 * 4)/(36 * 4) - (4 * 16)/(9 * 16)
x = 7 + 20/144 - 64/144
x = 7 + (20 - 64)/144
x = 7 + (-44/144)
x = 7 - 44/144
x = 7 - 0.3056
x ≈ 6.6944
е) k = 5 17/60 + 7 9/20
k = 5 17/60 + 7 9/20 = (5 + 17/60) + (7 + 9/20)
k = 5 17/60 + 7 9/20 = 5 + 7 + 17/60 + 9/20
k = 12 + 17/60 + 9/20
k = 12 + (17 * 20)/(60 * 20) + (9 * 60)/(20 * 60)
k = 12 +
Відповідь:а) x = 3/10
б) y = 959/68
в) a = 99/2420
г) b = 539/1331
д) x = -2/9
е) k = 4/15
Покрокове пояснення: