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3. Mention the steps you will use to separate the variable and then solve the equation:

(a) [tex]2(x-1)=10[/tex]

(b) [tex]\frac{x}{2}+\frac{1}{2}=1[/tex]

(c) [tex]-2-x=6[/tex]


Sagot :

Of course! Let's go through the steps for each equation to separate the variable and solve.

### Part (a) [tex]\( 2(x - 1) = 10 \)[/tex]

1. Distribute the 2 on the left side:
[tex]\[ 2(x - 1) = 10 \implies 2x - 2 = 10 \][/tex]

2. Isolate the term with the variable (get 2x by itself):
[tex]\[ 2x - 2 = 10 \implies 2x = 10 + 2 \implies 2x = 12 \][/tex]

3. Solve for [tex]\( x \)[/tex] by dividing both sides by 2:
[tex]\[ x = \frac{12}{2} \implies x = 6 \][/tex]

### Part (b) [tex]\( \frac{x}{2} + \frac{1}{2} = 1 \)[/tex]

1. Isolate the term with the variable (subtract [tex]\(\frac{1}{2}\)[/tex] from both sides):
[tex]\[ \frac{x}{2} + \frac{1}{2} = 1 \implies \frac{x}{2} = 1 - \frac{1}{2} \implies \frac{x}{2} = \frac{1}{2} \][/tex]

2. Solve for [tex]\( x \)[/tex] by multiplying both sides by 2:
[tex]\[ x = \left(\frac{1}{2}\right) \times 2 \implies x = 1 \][/tex]

### Part (c) [tex]\( -2 - x = 6 \)[/tex]

1. Isolate the term with the variable (add 2 to both sides):
[tex]\[ -2 - x = 6 \implies -x = 6 + 2 \implies -x = 8 \][/tex]

2. Solve for [tex]\( x \)[/tex] by multiplying both sides by -1:
[tex]\[ x = -8 \][/tex]

### Summary of Solutions
- Part (a) [tex]\( x = 6 \)[/tex]
- Part (b) [tex]\( x = 1 \)[/tex]
- Part (c) [tex]\( x = -8 \)[/tex]

These are the steps to isolate the variable and solve for [tex]\( x \)[/tex] in each of the given equations.