James used substitution to solve this system of equations. which could be the result of his first step
2x+3y=12
y=x+1.5

a. y=2x+3y
b. y=2x+3y+1.5
c.2x+3x+1.5=12
d.2x+3(x+1.5)=12

The answer is d=2x+3(x+1.5)=12

Step-by-step explanation:

Option D -

Step-by-step explanation:

Given : James used substitution to solve this system of equations.

Equation 1 -

Equation 2 -

To find : Which could be the result of his first step ?

Solution :          

In substitution method we substitute the value of one variable from a equation and put it into another equation.

We substitute the value of y from equation 2 in equation 1,

Equation 1 -

Therefore, the result of his first step is

So, Option D is correct.

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