Hey! :)
First, let us learn about substitution.
Let's say we have an equation 3x + 1y = 1 and 1x + 2y = 6
You need to pick one equation to solve for x.
Let's say we picked 1x + 2y = 6 for x to solve for y.
Then you'd solve.
Now onto the equation.
- Substitute 4x−17 for y in 3x+y=4:
3x+y=4
3x+4x−17=4
7x−17=4 - Simplify both sides.
7x−17+17=4+17 Let's add 17 to both sides.
7x=21
Divide both sides by 7.
7x/7 = 21/7
x = 3
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