Question

To solve this system of equations using substitution, what could be substituted in place of x in the second equation?

2y + x = 10
3x - y = -4
a. 2y - 11
b. 11 - 2y
c. 3x + 4
d. y - 4/3

Answer 1

To solve the system of equations using substitution, we need to substitute a value for x in the second equation.

Step-by-step explanation:

To solve the system of equations using substitution, we need to substitute a value for x in the second equation. Looking at the second equation 3x - y = -4, we can isolate x by adding y to both sides of the equation. This gives us:

3x = y - 4

Now, to substitute a value for x, we can rewrite this equation by replacing 3x with its equivalent using the first equation. From the first equation, we have x = 10 - 2y. Substituting this value into the second equation gives us:

3(10 - 2y) = y - 4

Simplifying the equation will allow us to solve for y.