Answer:
Step-by-step explanation:
Let the number be x
The question can be written mathematically as:
4x - 20 > 4
this is because 20 is subtracted (-20) from four times the number (4x) and the answer is supposed to be more than 4 ( >4 )
therefore 4x > 4 + 20
4x > 24
x > 24/4
x > 6
Hence x is any number greater than 6; (7, 8, 9,.... for real numbers)
Step-by-step explanation:
ten minus one divided by three
ten plus five minus three
seven plus three times five
Thomas = x
Huilan = x -15 (15 years younger than Thomas' age)
If Huilan (x) + Thomas' age (x-15) equals 33, then ;
x+x -15= 33
2x -15 =33 (do anything (throw -15 to the other side and then divide by 2) to leave x alone)
2x= 33+15
2x = 48
x = 24
Thomas is 24 and Huilan is 24-15 = 9 years old.
Hope it helps!
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Answer:
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Step-by-step explanation: