Question

solve for x
4x + 8 = 20

Answer 1

What about x/9 - 3 = 7

Answer 2

To solve the equation \( 4x + 8 = 20 \), follow these steps:

1. Subtract 8 from both sides:
\[
4x + 8 - 8 = 20 - 8
\]
This simplifies to:
\[
4x = 12
\]

2. Divide both sides by 4:
\[
\frac{4x}{4} = \frac{12}{4}
\]
This simplifies to:
\[
x = 3
\]

Therefore, the solution is:
\[
x = 3
\]

Answer 3

To solve the equation \( \frac{x}{9} - 3 = 7 \), follow these steps:

1. Add 3 to both sides:
\[
\frac{x}{9} - 3 + 3 = 7 + 3
\]
This simplifies to:
\[
\frac{x}{9} = 10
\]

2. Multiply both sides by 9 to isolate \( x \):
\[
9 \cdot \frac{x}{9} = 10 \cdot 9
\]
This simplifies to:
\[
x = 90
\]

Therefore, the solution is:
\[
x = 90
\]