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multiply everything inside the bracket (8-x) by everything outside the bracket (4).

4*8 - 4*x = 40

32-4x = 40

-32 from both sides

-4x = 8

divide by 4 on both sides

-x = 2

multiply by -1 on both sides

x = -2

4 (8-x ) = 40

=> (4* 8 ) -  (4 * x ) = 40

=> 32 - 4x = 40

=> -4x = 40-32

=> -4x = 8

=> x = -8/4 

=> x = -2

Cheers.....

Have a nice day............

4(8-x)=40

  • First you want to distribute the four into the parentheses: (4•8) and (4•x).
  • That gives you 32-4x=40
  • Next you want to subtract 32 from both sides: (32-32) and (40-32)
  • That should give you -4x=8
  • Then you divide -4 from both sides: (-4x/-4) and (8/-4)
  • x=-2

4(8-x)=40

32-4x=40

-4x=40-32

-4x=8

   x=8/4

   x=2

It can be solve in two ways. 

First expand parentheses: 32-4x=40

subtract 32 from both sides: -4x=8

Divide both sides by -4: x=-2  (Answer)

Other way is, divide both sides by 4: (8-x)=10

Omit parentheses: 8-x=10

Subtract 8 on both sides: -x=2

Multiply both sides by -1: x=-2 (Answer)

It can be solve in two ways. 

First expand parentheses: 32-4x=40

subtract 32 from both sides: -4x=8

Divide both sides by -4: x=-2  (Answer)

Other way is, divide both sides by 4: (8-x)=10

Omit parentheses: 8-x=10

Subtract 8 on both sides: -x=2

Multiply both sides by -1: x=-2 (Answer)

expand the brackets: 32-4x=40

add 4x on both sides and subtract 40 from both sides. This gives you -8=4x, thus 4x=-8. Divide both sides by 4, hence x=-8/4,   x=-2

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