View Full Version : Finding X in an equation
Jeremywonderly
Apr 22, 2008, 10:43 PM
A friend of mine is helping here kid with her math homework and doesn't know how to do it. She needs to find what x equals. And an explanation to how its done so she can explain it to her kid.
This is the equation
(-3)(2x+4)=5(x-3)
Thaks for the help 8)
ISneezeFunny
Apr 22, 2008, 11:43 PM
(-3)(2x+4)=5(x-3)
-6x - 12 = 5x - 15
-11x = -3
hope no more explanation is needed.
Washington1
Apr 23, 2008, 01:16 AM
Got the same answer
x=-3
Nyorovita
Apr 23, 2008, 03:26 AM
(-3)(2x+4) = 5(x-3)
-6x-12 = 5x - 15 (Multify and remove brackets)
-6x-5x = -15 +12 (Transfer of sides of like factors changes sign)
-11x = -3
x = 3 / 11 (Transfer of number and multiplication by -1)