Question

scrieti rezultatul sub forma de fractie zecimala
c) 101/10 : [(6/5+13/6) x (2.1 + 6/13)] : 13/9
d) 121/25 x[0.(03)]²+ 3/4 : [37/3 x 9/4 -11/2 x9/2}
e) [3.(16) : 3.(16) + 3.1(6) + 3.16 ] x 25/4 +1
f) 2+(2intregi 1/5)² : (3.2) x ( 4- 5intregi 1/2 x 9/22 ) - 207/320

x= ori
ajutati maaa dau coroana plus 35 puncteeeeeee

Answer 1

c) 101/10 : [(6/5+13/6) * (2.1 + 6/13)] : 13/9 = 101/10 : [(36/30 + 65/30) * (21/10 + 6/13)] : 13/9 = 101/10 : [101/30 * (273/130 +  60/130)] : 13/9 = 101/10 : (101/30 * 333/130) : 13/9 = 101/10 : 11211/1300 = 101/10 * 1300/11211 = 13130/11211
d) 121/25 *[0.(03)]²+ 3/4 : (37/3 * 9/4 -11/2 * 9/2) = 121/25 * (3/99)²+ 3/4 : (111/4 - 99/4) = 121/25 * 9/9801 + 3/4 : 12/4 = 9/2025 + 3/4 * 4/12 = 1/225 + 3/12 = 300/900 = 3/9 = 1/3
e) [3.(16) : 3.(16) + 3.1(6) + 3.16 ] * 25/4 +1 = (313/99 * 99/313 + 285/90 + 316/100) * 25/4 + 1 = (90/90 + 285/90 + 316/100) * 25/4 + 1 = (375/90 + 316/100) * 25/4 + 1 = (3750/900 + 2844/900) * 25/4 + 1 = 6594/900 * 25/4 + 1 = 164850/3600 = 16485/360 = 3297/72
f) 2+(2intregi 1/5)² : 3.2 * ( 4- 5intregi 1/2 * 9/22 ) - 207/320 = 2+(11/5)² : 32/10 * ( 4- 11/2 * 9/22) - 207/320 = 2+121/25 : 32/10 * ( 4- 9/22) - 207/320 = 2+121/25 : 32/10 * (88/22 - 9/22) - 207/320 = 2+121/25 * 10/32 * 79/22 - 207/320 = 2+242/160*79/22 - 207/320 = 2+121/160*79/11 - 207/320 = 2+9559/176 - 207/320 = 2+ 191180/3520 - 2277/3520 = 7040/3520+188903/3520 = 195943/3520
* = ori(e mult mai folosit pe internet)
Daca vroiai transformam fractiile in ireductibile