Question

I need help plsssss...........

Answer 1

A)x=3/2 y=½

Explanation:

to understand this

you need to know about:

• system of linear equation
• PEMDAS

let's solve:

• since y is equal to both equation therefore we can substitute the value of y into the other equation

1. 
   `\sf substitute \: the \: value \: of \: y : \\ \sf - x + 2 = 3x - 4`
2. 
   `\sf add \: x \: to \: both \: sides : \\ \sf - x + x + 2 = 3x + x - 4 \\ \sf 4x - 4 = 2`
3. 
   `\sf add \: 4 \: to \: both \: sides : \\ \sf xx - 4 + 4 = 2 + 4 \\ 4x = 6`
4. 
   `\sf divide \: both \: sides \: by \: 4 : \\ (4x)/(4) = (6)/(4) \\ x = (3)/(2)`

let's figure out y

1. substitute the got value of x into the second equation: y=3*3/2 -4
2. simplify multiplication:9/2 -4
3. simplify division:4.5-4
4. substract:0.5 alternate form:y=½