Create and solve a linear equation that represents the model, where circles and a square are shown evenly balanced on a balance beam.

1) x + 6 = 16; x = 10

2) x + 10 = 6; x = - 4

3) x = 6 + 10; x = 16

4) x + 6 = 10; x = 4

For this case, the first thing you should do is define variables:

x = number of balls that contains the square.

On the one hand, we have:

left side: square + 6 balls

On the other hand:

right side: 10 balls

We then have to balance:

x + 6 = 10

Clearing x we have:

x = 10-6

x = 4

Answer:

a linear equation that represents the model is:

4) x + 6 = 10; x = 4