Four more than 5 times the number x is less than 50

4+5x<50

Step-by-step explanation:

5n < 50 <-- - subtracts 4 from both sides

n < 10 <-- - divides both sides by 5

Check: testing n=0, we have 4 + 5 (0) = 4 + 0 = 4 < 54, so yes it works

testing n=10, 4 + 5 (10) = 4 + 50 = 54.

testing n=11, 4 + 5 (11) = 4 + 55 = 59 <-- - fails as expected.

X < 10, proven, verified, correct