Answer:
Step-by-step explanation:
3a-2b=14 multiply by 3
9a - 6b = 42 (1)
4a+3b=13 multiply by 2
8a +6b = 26 (2)
sum up (1) and (2)
17a = 68
a =4
b=-1
Step-by-step explanation:
work is shown and pictured
Answer:
do u need to isolate the variables?
Step-by-step explanation:
Answer:
x = 1/10
Step-by-step explanation:
1/40 + x = 1/8
Subtract 1/40 from each side
1/40-1/40 + x = 1/8-1/40
x = 1/8 - 1/40
Get a common denominator
x = 1/8 *5/5 - 1/40
x = 5/40 - 1/40
x = 4/40
Simplify
x = 1/10
Step-by-step explanation:
1st question
a)AB=-a+b=b-a
b)OC=a+b-a+3/2(b-a)=b+3/2b-3/2a=5/2b-3/2a=(5b-3a)/2
2nd question
a)CA=2a
b)AB=-a+b=b-a
c)BC=-b-a
