Question

What is the solution to the system of equations?



{x+y=4x=y−1

Answer 1

x = 1.5, y = 2.5 // (1.5,2.5)

Explanation:

Assuming the equations are:

`x + y = 4\\x = y - 1`

Luckly, one of the equations are already set to be equal to x or y, so we can use substitution.

`(y-1)+y=4\\2y-1=4\\2y=5\\y=2.5\\x = (2.5) -1 \\x = 1.5`