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zysi [14]
2 years ago
9

Eighty-seven decreased by three times a number is greater than one hundred sixty-five

Mathematics
1 answer:
fenix001 [56]2 years ago
5 0
This is the concept of algebra, we are required to find a number,x, such that 87 decreased by three times a number is great than one hundred and sixty-five.

Supposed the number is x, three times the number will be:
3*x=3x
thus;
87-3x≥165
-3x≥165-87
-3x≥78
dividing both sides by -3 we get:
(-3x)/(-3x)≥78/(-3)
x≤-26
This implies that the number is less than or equal to 26
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