6-2x=10 solve and find justification.

x=-2 and -2=x. *The answer should be have negative sign.*

Step-by-step explanation:

subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

a-c=b-c

subtract by 6 both sides of an equation.

6-2x-6=10-6

simplify.

-2x=4

divide by -2 both sides of an equation.

-2x/2=4/-2

simplify.

4/2=2

x=-2

Hope this helps!

Thanks!

Have a great day!

it would to have a graph or something ! but i had this question so its false

step-by-step explanation:

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is: