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a = 2bc-d
add d to both sides
a + d = 2bc
divide both sides by 2b
(a+d)/2b = c
c= (a+d) / 2b
If a=2bc+db= (a - d) / 2c If a=2b+c b=1/2(a-c)
A = 2bc - dAdd 'd' to each side of the equation:A + d = 2bcDivide each side by 2b :(A + d)/2b = c
a-2b=c
c= a-2b
(a+d)/2b=c
c= (a+d) / 2b
If a=2bc+db= (a - d) / 2c If a=2b+c b=1/2(a-c)
A = 2bc - dAdd 'd' to each side of the equation:A + d = 2bcDivide each side by 2b :(A + d)/2b = c
The method used is usually to isolate the value being solved for on the left hand side of the equation so, when we are told that a = 2bc - d we switch the equation around and get 2bc - d = a Then we add 'd' to each side and get 2bc = a + d Then we divide both sides by '2b' and get c = (a + d) / 2b
a = 2b + c then a - 2b = c ie c = a - 2b
c= a-2b
a-2b=c
If: a = 2b+c Then: a-c = 2b And: b = (a-c)/2
C= pi * D This is the formula for circumference.
b= 1/2 (a - c)
b = 1/2 (a - c) or for a = 3b - 2c: b = 1/3 (a + 2c) for a= 2bc + d is b= (a-d)/2c a= 2b +c is c= a - 2b b=1/3(a-2c)