Question

5x + 2y = 7

Answer 1

Answer:

$(\frac{5}{7},\frac{12}{7})$

Step-by-step explanation:

The given system is

$5x+2y=7$

$y=x+1$

We substitute the bottom equation into the top equation to get:

$5x+2(x+1)=7$

Expand to get:

$5x+2x+2=7$

Group similar terms:

$5x+2x=7-2$

Combine similar terms:

$7x=5$

$x=\frac{5}{7}$

Put $x=\frac{5}{7}$ into the bottom equation

$y=\frac{5}{7}+1$

$y=\frac{5+7}{7}$

$y=\frac{12}{7}$

The solution is

$(\frac{5}{7},\frac{12}{7})$

Answer 2

Answer: correct answer is {(5/7,12/7)}

Step-by-step explanation: