Question

What equation would you write to solve for x?


x + x - 8 = 90


x + x - 8 = 190

Answer 1

To solve for \( x \) in both equations, let's first simplify each one.

1. For the equation \( x + x - 8 = 90 \):
\[
2x - 8 = 90
\]
To isolate \( 2x \), add 8 to both sides:
\[
2x = 90 + 8
\]
\[
2x = 98
\]
Now divide by 2:
\[
x = \frac{98}{2}
\]
\[
x = 49
\]

2. For the equation \( x + x - 8 = 190 \):
\[
2x - 8 = 190
\]
Again, add 8 to both sides:
\[
2x = 190 + 8
\]
\[
2x = 198
\]
Now divide by 2:
\[
x = \frac{198}{2}
\]
\[
x = 99
\]

So, the solutions for \( x \) are:
- For the first equation: \( x = 49 \)
- For the second equation: \( x = 99 \)