40% of the number 50 is 20
Answer:
no solution.
Step-by-step explanation:
1) in order to explain, the given system should be resolved:

2) the both equations have the same slope (it is 3), it means the given lines are parallel, then no solution.
Answer:
61
Step-by-step explanation:
79 + 40 = 119
180 - 119 = 61
Answer:
13,7
Step-by-step explanation:
Answer: 45
Step-by-step explanation:180 divided by 4 = 45