12
In the equation 43X +2=5X, X=-1/19.
21
3 x - 7 = -21
For x-2x= 3x-43x+1 x-2x= -x and 3x-43x+1 = -40x+1 so -x= -40x+1 subtract -x from both sides 0= -39x +1 -1 = -39x so 1=39x so x=1/39
It is an equation and the value of x is 7
5
21 is the only solution of that equation.
3x + 7 = -4x + 28 implies 7x + 7 = 28
you have to make it into a one variable equation 21 * 21 = 7 * 7 * X 441 = 49 * X 441/49 = X 9 = X
x-21 = -10 x = -10+21 Solve for x... -10+21= x x=11 Plug 11 into original equation and see for yourself! Dana from USM in MS. x = 11
To solve the equation 9x = 21, you would first need to isolate the variable x by dividing both sides by 9. This would give you x = 21/9, which simplifies to x = 7/3 or x = 2.33 (rounded to two decimal places). Therefore, the value of x that satisfies the equation 9x = 21 is x = 7/3 or x = 2.33.
3x - 4 = 83x = 8+43x = 12x = 12/3 = 4