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Sagot :
Answer:
Answer: Do -7 + 7 and do the same to 10, (7 + 10). This is the first step in Isolating the variable.
Step-by-step explanation:
hope it's right
[tex]\large \mathfrak{Solution : }[/tex]
let's solve for x :
first step : adding 7 on both sides
- [tex]9x - 7 = 10[/tex]
- [tex]9x - 7 + 7 = 10 + 7[/tex]
- [tex]9x = 17[/tex]
next step : dividing by 9 on both sides :
- [tex] \dfrac{9x}{9} = \dfrac{17}{9} [/tex]
- [tex]x = \dfrac{17}{9} [/tex]
now, let's check for the solution by Plugging the value of x as 17 / 9 in the above equation.
- [tex]9x - 7 = 10[/tex]
- [tex](9 \times \dfrac{17}{9} ) - 7 = 10[/tex]
- [tex]17 - 7 = 10[/tex]
- [tex]10 = 10[/tex]
we can see that the LHS = RHS, therefore our value for x is correct. i.e 17 / 9
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