2 years ago

What are the rules to solving equations by multiplying or dividing?

1 answer:

5 0

Answer:

In order to move a number that is multiplied or divided by the variable, make sure to inverse both sides! That means, if the number is multiplied, you divide it by both sides. If it's divided, you must multiply it by both side; steps so that you can apply them to harder equations.

Sorry if this didn't help! I hope it did though, good luck. <3

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Lisa's dog has 4 squeaky toys. Two thirds of the dog's toys are squeaky toys. How many dog toys does Lisa's have in all?

viva [34]

. Lisa's dog has 4 squeaky toys
. the squeaky toys are 2/3 of all the dog's toys

. let x be number of all dog toys

make an equation
(2/3)x = 4 ← solve
x=6

check
2/3 × 6 = 4

Lisa's Dog has 6 toys in all

3 0

2 years ago

Additive inverse of 400

Goshia [24]

Given:

A number is 400.

To find:

The additive inverse of 400.

Solution:

We know that the sum of a number and its additive inverse is 0.

If "a" is number and "b" is its additive inverse, then

$a+b=0$