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Mathematics
Chessie
Today, 10:55
7*9 = (7*10) - (7*▲)
What is the value of ▲ in the equation?
+4
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Hubbard
Today, 12:30
0
Can't type thta trignale thingie so subsitute with x
7*9 = (7*10) - (7*x)
we can multipily what we know
7*9=7 times 9=63
7*10=7 times 10=70
now we have
63=70 - (7*x)
add (7*x) to both sides
(7*x) + 63=70
subtract 63 from boths ides
(7*x) = 7
divide both sides by 7
x=1
the answe ris traignle is equal to 1
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Jayden Valdez
Today, 14:08
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7x9 = (7x10) - (7xa)
63=70-7a
-7=-7a
a (triangle) = 1
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