- 5m + 12 = - 9
subtract 12 from each side
- 5m + 12 - 12 = - 9 - 12
- 5m = - 21
divide both sides integers by - 5
(- 5/- 5)m = - 21/- 5
m = 21/5
-----------------------check in original equation
= 5(21/5) + 12 = - 9
- 105/5 + 12 = = 9
(now, 12 = 60/5 , so)
- 105/5 + 60/5 = - 9
- 45/5 = - 9
- 9 = - 9
----------------checks
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42+4y -12 = 13y -12 -2y 4y -13y+2y = 12 -12 -42 -7y = -42 y = 6
-2x - 2y = -122x + 2y = 122y = 12 - 2xy = 6 - x
7
3x 3y + 6z = 12
Well, isn't that just a happy little equation we have here! To solve for x, we can divide both sides by 12, which gives us x equals 2. And just like that, we've found the value of x that makes our equation balanced and complete. Keep up the good work, friend!