3 years ago

Mental math to find 420 - 177

Mathematics

1 answer:

solniwko [45]3 years ago

7 0

Answer:

420

-177

---------

243

ANSWER=243

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Using the digits 0-9, no more than one time each, place a digit in a box to create an equation with a solution x= -1/2

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Step-by-step explanation:

Using the digits 0-9, no more than one time each, place a digit in a box to create an equation with a solution x= -1/2 . We need to Create three equations. Formula is below. __ x+ __=__ x+ __ . Let's find out:

2x+1=6x+3

Let's verify this :

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Let's verify this :

⇒ $8x+6=2x+3$

⇒ $6x=-3$

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Let's verify this :

⇒ $8x+4=2x+1$

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