1. Which of the following equations shows how substitution can be used to solve the following system of equations? Jy=2.+ 3
121 + 5y = 3
y=3
2x + 5(2x + 3) = 3
2(2x + 3) +5y = 3
2x - 5y = 2x + 3

20

step-by-step explanation:

answer: it's d

step-by-step explanation:

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: