Question

Alguien que me ayude porfa

A) 21/4 + 12/5

B) 11/14+ 2/7

C) -7/6 - 7/3

D) -3/8 + 2

E) -1 - 4/9

F) 19/10 + 2/5 + 1/4

G) 1/9 + 5/18 + - 7/3

H) 2 - (-8/5) + (-1/5) ​

Answer 1

A. 21/4 + 12/5

• 21x5+12x4/4x5
• 105+48/20
• 153/20

B. 11/14 + 2/7

• 11x7 + 2x14/14x7
• 77 + 28/98
• 105/98

C. -7/6 - 7/3

• -7x3 -7x6/6x3
• -21 -42/18
• -63/18
• -21/6
• -7/2

D. -3/8 +2

• -3x1 +2x8/8x1
• -3+16/8
• 13/8

E. -1 -4/9

• -1x9 -4x1/9
• -9 -4/9
• -13/9

F. 19/10 + 2/5 + 1/4

• 19x5 + 2x10 /10x5 + 1/4
• 95+20/50 + 1/4
• 115/50 + 1/4
• 115x4 + 1x50/50x4
• 460 + 50 /200
• 510/200
• 51/20

G. 1/9 + 5/18 + -7/3

• 1x18 + 5x9/8x18 + -7/3
• 18 + 45 /144 + -7/3
• 63/144 + -7/3
• 63x 3 + -7x144/144x3
• 189 - 1008/432
• -819/432
• -273/144
• -91/48

H. 2 -(-8/5) + (-1/5

• 2 +8/5 -1/5
• 2x5 + 8x1/1x5 - 1/5
• 10 + 8/5 - 1/5
• 18/5 - 1/5
• 18-1/5
• 17/5