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cupoosta [38]
3 years ago
10

What number decreased by 3.5 equals to 12.7 ?

Mathematics
2 answers:
Snowcat [4.5K]3 years ago
5 0
What number = x

x - 3.5 = 12.7

Isolate the x, add 3.5 from both sides

x - 3.5 (+3.5) = 12.7 (+3.5)

x = 12.7 (+3.5)

x = 16.2

16.2 is your answer


hope this helps
RUDIKE [14]3 years ago
4 0
Let's make an equation. We need to find a number that when 3.5 is subtraced from it is 12.7. The equation would look like.
X-3.5=12.7
Now, we need X by itself, so we need to add 3.5 to both sides.
X=12.7+3.5
X=16.2
If the number is 16.2, let's check.
16.2-3.5=12.7
The number is 16.2.
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