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Amiraneli [1.4K]
3 years ago
10

Does 8-x=9 have one or more values?

Mathematics
2 answers:
kirill [66]3 years ago
4 0

Answer:

One solution

Step-by-step explanation:

Solving 8 - x = 9 yields -x = 1, or x = -1.  There is ONE solution (not value).

notsponge [240]3 years ago
3 0

Answer: one value

Step-by-step explanation:

8 - x = 9

collecting the like terms

x = 8 - 9

x = -1

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Solve each system by elimination<br><br> 5x+y=9<br> 10x-7y=-18<br><br> -4x+9y=9<br> x-3y=-6
tiny-mole [99]
5x + y = 9....multiply by 7
10x - 7y = -18
----------------
35x + 7y = 63 (result of multiplying by 7)
10x - 7y = -18
----------------add
45x = 45
x = 45/45
x = 1

5x + y = 9
5(1) + y = 9
5 + y = 9
y = 9 - 5
y = 4

solution is : (1,4)
=========================
-4x + 9y = 9
x - 3y = -6 ....multiply by 4
----------------
-4x + 9y = 9
4x - 12y = -24 (result of multiplying by 4)
---------------add
- 3y = - 15
y = -15/-3
y = 5

x - 3y = -6
x - 3(5) = -6
x - 15 = -6
x = -6 + 15
x = 9

solution is : (9,5)
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