You have 2x - 12 = 3 ie 2x = 15 so x = 7.5
294
Without an equality sign the expression given can't be considered to be an equation
8x+4 = 2x+28 8x-2x = 28-4 6x = 24 x = 4
12
Multiply by 10...
-9x = 13.5 Divide both sides by -9 to find the value of x: x = -1.5
1/3 + x = 1/2 x = 1/2-1/3 = 1/6
-0.2x2+12x+11 = 0 Using the quadratic equation formula will give you two solutions which are: x = 30 + the square root of 955 = 60.90307428 to 8 decimal places. or: x = 30 - the square root of 955 = -0.90307428 to 8 decimal places.
-32
some accepted them as migrants.
It is:- 3c+5 = c+15 Subtact 5 and c from both sides: 2c = 10 Divide both sides by 2 to find the value of c: c = 5
divide 9 by 17, gives 0.5294