Answer:
the system of equation has infinite solution
Step-by-step explanation:
, 
Solve the first equation for x_2
Subtract 5x1 on both sides


Now substitute -5x1 on second equation



0=0
So the system of equation has infinite solution
Answer:
hi
Step-by-step explanation:
for example

in the second one you should multiple 5 and 1 then add 4
Yes, he is correct, using the distributive property you get the same answer
Answer:
`18. x=9
19. x=4
20. x=25,5
21. x=3
22. x=3,5
23. x=10
Step-by-step explanation:
The answer is C. 98.47
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