Step-by-step explanation:
1. x + 1 = 2
[tex]x+1=2[/tex]
- Subtract 1 from both sides.
[tex]x=2-1[/tex]
- Subtract 1 from 2 to get 1
The answer is x = 1
2. 2r + 4 ≥ 8
[tex]2r+4\geq 8[/tex]
-
Subtract 4 from both sides.
[tex]2r\geq 8-4[/tex]
- Subtract 4 from 8 to get 4.
[tex]2r\geq 4[/tex]
- Divide both sides by 2. Since 2 is positive, the inequality direction remains the same.
[tex]r\geq \frac{4}{2}[/tex]
The answer is r ≥ 2
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