Question

If x = y – 9, and y – 4 = 10, x = ?

Answer 1

X = 5

`\sf \large \: x=5 and y=14`

Explanation:

Let's solve your system by substitution.

x=y−9;y−4=10

Rewrite equations:

y−4=10;x=y−9

Step: Solvey−4=10for y:

y−4=10

y−4+4=10+4(Add 4 to both sides)

y=14

Step: Substitute14foryinx=y−9:

x=y−9

x=14−9

x=5(Simplify both sides of the equation)