Question

how to subtract this number 8-3x=7-x​

Answer 1

8-3x-7+x

=8-7-3x+1x

=1-2x

-2x=-1

-x = -1/2

x= 1/2

Answer 2

Answer:

$\Large\boxed{X=\frac{1}{2}=0.5 }$

Step-by-step explanation:

GIVEN:

To solve this problem, first you have to isolate by the x on one side of the equation.

Isolate is a separate from other substances like place apart so as to be alone.

SOLUTIONS:

First, you have to subtract by 8 from both sides.

$\displaystyle 8-3x-8=7-x-8$

Solve.

$\displaystyle -3x=-x-1$

Secondly, add by the x from both sides.

$\displaystyle -3X+X=-X-1+X$

Solve.

$\displaystyle -2x=-1$

Then, you divide by -2 from both sides.

$\displaystyle \frac{-2x}{-2}=\frac{-1}{-2}$

Solve. (Simplify/find the solution and it give us final answer.)

$\displaystyle \boxed{X=\frac{1}{2}}$

Divide.

$\displaystyle 1\div2=\boxed{0.5}$

$\Large\boxed{X=\frac{1}{2}=0.5}$

So, the correct answer is x=1/2=0.5.