Thé correct answer is the third one
Answer:
(-8/7 ; 5/7)
Step-by-step explanation:
5t + 1/2s = 3 - - - (1)
3t - 6s = 9 - - - - - (2)
Multiply (1) by 12 and (2) by 1
Add the result to eliminate s
60t + 6s = 36
3t - 6s = 9
____________
63t = 45
t = 45 / 63
t = 5/7
Put t = 5/7 in either (1) or (2) to obtain the value of s
3(5/7) - 6s = 9
15/7 - 6s = 9
-6s = 9 - 15/7
-6s = (63 - 15)/7
-6s = 48/7
s = 48/7 * - 1/6
s = - 8/7
Answer:
13, 11, 2, 25, 66, 5, 12, 25, 45
Step-by-step explanation:
Right to Left
What is the word problem?
You need to get x= something.
To do this, you -4 on both sides to leave you with just an x value on the left. This gives -6x=-6
Then you need x on its own, so you divide both sides by -6.
-6/-6= 1, so x=1
