The subtraction of equality.
I couldn't answer the question because the question is not proper to slove. I just want you to follow the related link that explains how to solve the equation by completing the square.
If you mean: 4n-2n = 4 then 2n = 4 and n = 2
We slove problem on mixture by using the method called method of cross difference (cheaper / dearer) = (mean-cheaper)/(dearer-mean)
the problem is not proper to slove. I just want to suggest to follow the related link that explains the concept of completing the square clearly.
If: 14x = 56Then x = 56/14Therefore: x = 4
division (divide 19 into 646)
11
The equation 10b = 11 can be solved for b by dividing both sides of the equation by 10. b = 11/10 or 1.1
you use a calecutor with graph on it!
Not sure that you can slove anything. -2w = r + s is one linear equation in 3 unknown variables. You need three independent equations in 3 variables to be able to solve them.
5y = 4x - 35 Divide each side of the equation by 5 : y = 4/5 x - 7
y = 5
murder the person...operation done
x=36From superscot85: It does not!2x + 7 = 79Subtract 7 from each side: 2x = 72Divide each side by 2: x = 36
-9.959999999999999
4m + 9 + 5m - 12 = 42 9m -3 = 42 9m = 42 + 3 9m = 45 m = 5