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Sagot :
Answer:
suppose X for billy and Y for tommy
now
X+5=12
or, X=12-5
or, X=7
hence answer is optionD
Answer:
D. 7 Cars
Step-by-step explanation:
If Tommy has 12 cars and it's 5 more than Billy
You do the inverse of addition which is Subtraction
12 - 5 = 7
In Detail:
a = Billy (Answer)
b = +5 (more or less / difference)
c = Tommy (12)
a + b = c
a + 5 = 12
Now you find out something that when you add 5 to it makes 12
You can do this by bringing the +5 to the 12 but you have to change it to a -5
So:
a + 5 = 12 turns to a = 12 -5
12 - 5 = a
7 = 12 - 5 or 12 - 5 = 7
The answer is 7
(sorry if I'm confusing)
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