1/2(x)(12+8)=60 [help]?

Question

step by step please :)

Answer 1

Hi:

I hope this helps :

1/2x( 12+8) =60   - the original equation

.5(x)(20)=60  - decimalize a common faction and solving the addition

.5x(20) * 1/20= 60*1 /20 - using the inverse of multiplication  to move a term to the other side

.5x = 3 - multiplication of terms

2*.5x= 3 *2 - using the inverse of division to move a term to the other side

x= 6 the multiplication of terms  

prove that 1/2(x)20 =60  is true if x =6

1/2x( 12+8) =60   - the original equation

.5(6)(20)=60  - decimalize a common faction and solving the addition and substituting for x

3*20= 60 -  completing  the multiplication of one the terms

60= 60 -  completing the multiplication and checking the answers

the answer is true;  if x = 6;  it checks

Answer 2

Another way:

1/2(x)(12+8)=60

Multiply both sides by 2...

(x)(12+8)=120

Shorten....

20x=120

Divide both sides by 20....

x=6

Answer 3

not clear. Is it:

(1/2)(x)(12+8)=60

(1/2)(x)(20)=60

(x)(10)=60

x = 60/10 = 6

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