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You have to get "X" by itself so you subtract 12, 7-12 is -5 so "X" = - 5
As created (the concept) by Descartes, a variable is an alphabetic character used to represent unknown values. They are extremely useful when solving algebraic calculations allowing us to solve a range of calculations in simpler computations.
Answer:
C
Step-by-step explanation:
see attached
Mark as brainllest
Answer:
x = -
or x= 4.1739
Step-by-step explanation:
-
= 4
I will show two methods of solving this equation
<u>First method</u>
We will follow the steps below:
First find the LCM of 8 and 3
The LCM of 8 and 3 is 24
Next is to multiply through by 24
Our equation becomes
24 ×
- 24×
= 24× 4
3×3x - 8×4x =24×4
9x - 32x = 96
-23x = 96
Divide both-side of the equation by - 23
-23x/-23= 96/-23
x=-
or x=4.1739
<u>second method</u>
<u />
-
= 4
= 4
multiply both-side of the equation by 24 or cross multiply
9x - 32x = 96
-23x = 96
divide both-side of the equation by -23
x = -
or x= 4.1739