Question

(x + 15) × 50 = 13700

70 × x – 70 × 28 = 490 

Answer 1

x+15=13700:50

x+15=274

x      =274-15

x      =259

 

70 x (x-28)=490

         x-28=490:70

         x     =7+28

         x     =35

Answer 2

x = 35