(i) 2/3(-3/2+1/4)+1
(ii) (-5/4×10/15)-(16/25÷(-8/5))
Answers
Answer:
1.-7/3
2.-37/30
Step-by-step explanation:
1.2/3(-3/2+1/4)+1
:2/3(-12+2/2)+1
:2/3(-10/2)+1
:2/3(-5)+1
:-10/3+1
:-10+3/3
:-7/3
2.(-5/4×10/15)-(16/25÷(-8/5))
:(-1/2×5/3)-(16/25×5/8)
:(-5/6)-2/5
:-25-12/30
:-37/30
I hope it is correct
Answer:
hlo mate!!!!
(i) 2/3(-3/2+1/4)+1
2 -3 1
= ----- ( ------ + ------ ) + 1. lcm = 4
3 2 4
2 -6 +1
= ----- ( ----------- ) + 1
3 4
2 -5
= ----- ( ----- ) + 1
3 4
2 -5
= ----- × ----- + 1
3 4
1 -5
= ----- × ----- + 1
3 2
-5
= ----- + 1. Lcm = 6
6
-5 6
= ----- + -----
6 6
= 1
----- = 0.16666..........
6
(ii) (-5/4×10/15)-(16/25÷(-8/5))
-5 × 10 - 16 ÷ (-8)
= ( ------ ------ ) (------- --------- )
4 15 25 5
-5 × 10 - 16 × -5
= ( ------ ------ ) (------- --------- )
4 15 25 8
-1 × 10 - 2 × -1
= ( ------ ------ ) (------- --------- )
4 3 5 1
-10 - -2
= ( ------) (-------)
12 5
after opening the brackets
-10 + 2
= ------ ------
12 5
= -50 + 24
---------------
60
= -26 -13
--------- = -----
60 30