la respuesta para la ecuación es -5
Answer:
20%
Step-by-step explanation:
23/115=.2
Three equations are:
2x+1=6x+3
8x+6=2x+3
8x+4=2x+1
<u>Step-by-step explanation:</u>
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 :
⇒ 
⇒ 
⇒ 
8x+6=2x+3
Let's verify this :
⇒ 
⇒ 
⇒ 
8x+4=2x+1
Let's verify this :
⇒ 
⇒ 
⇒ 
For example, evaluate 17*5*20:
Method 1: (17*5)*20 = 85*20 = 1,700.
Method 2: 17*(5*20) = 17*100 = 1,700.
Notice that by first multiplying 5*20 to get 100, the calculation
is easy to do in your head.
You can also use the commutative property to rearrange a question:
5*21*4 = 5*4*21 = 20*21 = 420