Question

Tìm X

X x 2 + X x 8 = 2470

X x 197 - X x 97 = 70600

Answer 1

X x 2 + X x 8 = 2470

X x ( 2 + 8 )   = 2470

X x     10       = 2470

X                  = 2470 : 10

X                  = 247

X x 197 - X x 97 = 70600

X x ( 197 - 97 )   = 70600

X x      100         = 70600

X                       = 70600 : 100

X                       = 706

Answer 2

X x 2 + X x 8 = 2470

X x ( 2 + 8 )   = 2470

X x     10       = 2470

X                  = 2470 : 10

X                  = 247

X x 197 - X x 97 = 70600

X x ( 197 - 97 )   = 70600

X x      100         = 70600

X                       = 70600 : 100