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Sergeeva-Olga [200]
3 years ago
13

I need help please you haft to use elimination to solve thanks

Mathematics
1 answer:
nekit [7.7K]3 years ago
3 0
-7x+14y=-14
-3x+7y=-3
when using elimination you need to multiply or divide one equation to be able to “eliminate” a variable.
-7x+14y=-14
-2(-3x+7y=-13)
multiply the second equation by -2
-7x+14y=-14
6x-14y=6
simplify
-1x=-8
divide by -1 on both sides to isolate the x
x=8
now you can plug in 8 for x in one of the equations.
-3(8)+7y=-3
simplify
-24+7y=-3
add -24 to both sides the isolate the constant and variable
7y=21
now divide by 7 on both sides to isolate y
y=3
this system of equation had one solution at (8, 3)

i hope this helps :)
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_______________________________________________
Note:  
_______________________________________________
The question asks:
_______________________________________________
If (5⁴)ᵐ  = 5¹² ;  then what is "m" ?

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________________________________________________
   (xᵃ)ᵇ = x⁽ᵃ*ᵇ⁾ ; a≠0 ; b ≠ 0 ;  

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