4x - y = 6
2x - y/2 = 4 /multiply both sides by 2 to get rid of the fraction
4x - y = 6
4x - y = 8
This system has no solution because it contradicts itself.
C. It's understood that's there's a one in front of the sq rt of 2
So 3 sq rt of 2- 1 sq rt of 2 gives you 2 sq rt of 2
First add 45 and 30 then dovide your sun by 5 and you get 15.
45+30
75/5
15
Answer: 15