Solve: 7r - 7 = 2r + 18
My answer:
7r - 7r - 7 = 2r - 7r + 18
-7 = -5r + 18
-7 - 18 = -5r + 18 - 18
-25/-5 = -5r/-5
R = 5
Right.
7R=7+5
To solve the equation 7r - 7 = 2r + 18, you can follow these steps:
1. Start by simplifying both sides of the equation. To do this, you can combine like terms. On the left side, combine the terms with 'r', which gives you 7r - 7r = 0. On the right side, combine the constants, 2r + 18 - 18 = 2r.
2. After simplifying, the equation becomes 0 = 2r.
3. Since any number multiplied by zero is zero, this equation implies that r can be any real number, including zero.
Therefore, the solution to the equation 7r - 7 = 2r + 18 is r = 0.