algebra question
2007-08-20 17:37:48 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
t=-10-9/7
=-79/7
Ideas:
Bring the 9/7 over, find a common denominator and simplify.
2007-08-20 17:41:38 · answer #1 · answered by de4th 4 · 0⤊ 0⤋
Subtract 9/7 from each side. Think of -10 as -70/7. So t = -70/7 - 9/7 = -79/7. If you want to change it back to a mixed number, it is -11 2/7.
2007-08-21 00:46:04 · answer #2 · answered by washington610 1 · 0⤊ 0⤋
convert the -10 to a fraction with 7 as the denominator. so it will be t+9/7= -70/7.
subtract the 9/7 from the -70/7 which will make the equation:
t= -70/7 - 9/7
therefore:
t= -79/7
2007-08-21 00:44:10 · answer #3 · answered by tnguyen987 2 · 0⤊ 0⤋
Hi Amber:
remember the following:
1. start by realizing this is just a problem in making it SIMPLE.
Your goal is to get t all by itself on one side.
2. Subtract off that pesky 9/7 from both sides.
t + 9/7 = -10
-9/7 - 9/7
_______________
t + 0 = -10 - 9/7
t = -10 - 9/7
3. Now simplify even more by getting rid of the fraction.
Divide 9 by 7.
t = -10 - 1.286
4. Now simplify even more. Like's add - which means that subtracting from a negative is like adding them together.
t = 11.286
5. Don't forget the negative sign!!
t = -11.286
2007-08-21 00:53:15 · answer #4 · answered by macdaddy0214 1 · 0⤊ 0⤋
Is this
(t + 9) / 7 or t + 9/7?
Guess at:-
(t + 9) / 7 = - 10
t + 9 = - 70
t = - 79
However, if:-
t + 9 / 7 = - 10
7t + 9 = - 70
7t = - 79
t = - 79 / 7
Conclusion
Use brackets to clarify question.
2007-08-21 04:41:33 · answer #5 · answered by Como 7 · 2⤊ 0⤋
t + 9/7 = -10
Recall that when we move a number from its initial side to its opposite side, we need to make it negative if its a positive number and vice versa.
In this case,
t = -10 - 9/7
t = -79/7 or -11 2/7 or -11.2857
2007-08-21 03:00:34 · answer #6 · answered by 痴心情长剑 3 · 0⤊ 0⤋
t + 9/7 = -10
t = -10 - 1 2/7
t = - 11 2/7
2007-08-21 00:45:57 · answer #7 · answered by 037 G 6 · 0⤊ 0⤋
t + 9/7 = - 10 .............add -9/7 to both sides
t +9/7 - 9/7 = -10 - 9/7
t = [ - 70 - 9]/7
t = -79/7
2007-08-22 03:58:04 · answer #8 · answered by billako 6 · 0⤊ 1⤋
t + 9/7 = 10
to find " t " tranfer 9/7 to other side, the equation becomes
t =10 - 9/7 ( when +9/7 tranfered to other side signs change
cross multiply Right hand side
t = (7*10 - 9)/7
t = (70-9)/7
t = 61/7
t = 8.714
2007-08-21 13:46:43 · answer #9 · answered by pARe 1 · 0⤊ 1⤋
The laws of maths dictate that the division be done first.
So, t+9/7=-10 becomes t+1.29=-10.
So, -10=t+1.29 deduct 1.29 from both sides.
Giving, t = -11.29
Or, t+9/7=-10
So, t+1 2/7=-10
....... t=-11 2/7
2007-08-21 11:35:40 · answer #10 · answered by Anonymous · 0⤊ 2⤋