Question 273975
y=x+1
2x+y=10


all you do is add part A into Part B , meaning plug it in and solve like a regular equation. 

2x + x + 1 = 10

3x + 1 = 10 <--- one one from one and ten

3x = 9 <--- divide 3 from both sides

{{{x = 3}}}

2(3)+y=10

6 + y = 10 <-- minus 6 from both sides

{{{y = 4}}}

plug it in to check.!

2(3) + 4 = 10

6 + 4 = 10

10 = 10
CORRECT~!!