Question

I give medals

2x + y = 3
x - 2y = -1

If equation one is multiplied by 2 and then the equations are added, the result is _____.


3x = 2
3x = 5
5x = 5

Answer 1

Just use system of equations elimination or substituion

Answer 2

2 * [(2x + y) = 3]
So that gives you :
4x +2y = 6
+ x - 2y = -1
Do the math

Answer 3

um so the answer is b right? or am i wrong

Answer 4

Nope it's C. 4x+x=5x

Answer 5

damn. okay thanks