Question

How many solutions does the system 2y=10x-14 and 5x-y=7 have? need worked out step by step please!

Answer 1

these 2 equations are actually the same, 
hope u can understand.

Answer 2

2y=10x-14
5x-y=7

Divide both sides by 2 in the 1st equation
y=5x-7
Now substitute is to 2nd equation 
5x-5x+7=7
0=0

Therefore there is no solution or it is inconsistent