Question

( x + 100 ) : 2 = 300 + 400

Answer 1

(x + 100) : 2 = 300 + 400

(x + 100) : 2 = 700

x + 100        = 700 : 2

x + 100        = 350

x                 = 350 - 100

x                 = 250

Answer 2

(x + 100) : 2 = 300 + 400

(x + 100) : 2 = 700

 x + 100       = 700 x 2

 x + 100        = 1400

           x        = 1400 - 100

           x        = 1300 

Answer 3

( x + 100 ) : 2 = 300 + 400

( x + 100 ) : 2 = 700

 x + 100  = 700 . 2

 x + 100  = 1400

 x  = 1400 - 100

x   = 1300

Answer 4

(x+100):2=300+400

x+100:2=700

x+100=700x2

x+100=1400

x=1400-100

x=1300

Answer 5

(x + 100) : 2 = 300 + 400

(x + 100) : 2 = 700

x + 100 = 700 : 2

x + 100 =350

x = 350 - 100

x = 250

Answer 6

(X+100):2=300+400

(X+100):2=700

X+100=700:2

X+100=350

X=350-100

X=250

Answer 7

(x+100):2=300+ 400

(x+100):2=700

x+100     =700x2

x+100     =1400

x            =1400-100

x            =1300

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