Question

tìm x biết : X x 2 + X x 3 + X x 4 + X = 2130

Answer 1

x.(2+3+4+1)=2130

x.10=2130

x=2130:10

x=213

Answer 2

X x 2 + X x 3 + X x 4 + X = 2130

X x ( 2 + 3 + 4 + 1) = 2130

X x 10 = 2130

X = 2130 : 10

X = 213

Answer 3

X x 10 = 2130

x=2130 : 10

x=213