linear equation general strategy

[bobisaka]

5(a-3)+5=-10
5a-3+5=-10
5a+2=-10
5a+2-2=-10-2
5a=-12
5a/5=-12/5

a = 0


How and why is the answer zero?

 

[Deleted member 4993]

5(a-3)+5=-10
5a-3+5=-10
5a+2=-10
5a+2-2=-10-2
5a=-12
5a/5=-12/5

a = 0


How and why is the answer zero?

You write:

5(a-3)+5=-10

5a-3+5=-10 .................Incorrect ..... it should be ...... → 5 * a - 3*5 + 5 = -10 ....................continue.....

 

[Steven G]

5(a-3)+5=-10
5a-3+5=-10
5a+2=-10
5a+2-2=-10-2
5a=-12
5a/5=-12/5

a = 0


How and why is the answer zero?

Why is the answer a=0??
5(0-3) + 5 = 5(-3) + 5 = -15 + 5 = -10.

 

[bobisaka]

got it.

Thanks!