6x - 12 = 3x + 15
3x = 27
x = 9
Wiki User
∙ 2011-02-18 17:47:14If: 3x = 15 Then: x = 5
solve -3x-3y=-15
If: 3x = 45 Then: x = 15
If you mean: x^2+15-3x then its value is 19 when x equals 4
3x = 15 >> 3x = multiplication, and the opposite of multiplication is division. So you take 3x, draw a line under it to show division, then write 3. After that, cross out the 3x/3. With algebra what you do to one side, you do to the other, so then you take 3 and divide it by 15. >>the answer>> X=5
If: 3x = 15 Then: x = 5
y = 15 (by transitivity)
15=30-3x 15-30=3x -15=3x -15/3=x -5=x
3x-6=21-6=15
solve -3x-3y=-15
no
If: 3x = 45 Then: x = 15
3x+12x = 15 15x = 15 x = 1
5 y = 15 y = 3 3x - y = 3x-3=0 3x -3 = 0 3x = 3 x = 1
-3x=-15+6 -3x=-9 x=-9/-3 x=3
3x - 5 = -15 so 3x = -15+5 so 3x = 10 x = 10 over 3
If: -3x = 15 Then: x = -5 Because: -3 times -5 = 15