B. 4/5- 3/4
C. 7/8 + 3/5
D. —3/7 + 2/5
E. —3/4 – 1/2
tolong bantu ya kk
soal ya nan ti dikirim
A. 1/2 + 2/3
Jawab:
A. 7/6
B. 1/20
C. 59/40
D. -1/35
E. -5/4
Penjelasan dengan langkah-langkah:
A. 1/2 + 2/3
(1/2)*(3/3) + (2/3)*(2/2)
= 3/6 + 4/6
A. = 7/6
_______
B. 4/5 – 3/4
(4/5)*(4/4) – (3/4)*(5/5)
= 16/20 – 15/20
B. = 1/20
________
C. 7/8 + 3/5
(7/8)*(5/5) + (3/5)*(8/8)
= 35/40 + 24/40
C. = 59/40
________
D. -3/7 + 2/5 = 2/5 – 3/7
(2/5)*(7/7) – (3/7)*(5/5)
= 14/35 – 15/35
D. = -1/35
________
E. -3/4 = -0,75; 1/2 = 0,5
-0,75 – 0,5
= -1,25
= – (1 1/4)
= – [(4*1)+1]/4
E. = -5/4