Question

Solve the system using substitution

System of equations

Blank 1) What variable in the bottom equation will you use to substitute into the top equation (X or Y)? ______

Blank 2) What does the top equation look like after you substitute from the bottom equation into the top equation?

(This is before you simplify it.) ____________

Blank 3) What does the equation from Answer 2 look like once it is simplified using the distributive property and adding like terms? ______________

Blank 4) What is the solution? x = _______

Blank 5) What is the solution? y = _______

Question options:

Answer 1

Explanation:

Blank 1) Y

Blank 2) 4x+5(3x+9)=7

Blank 3) 4x + 15x + 45 = 7

Blank 4) x= -2

Blank 5) y = 3