Question

x + x*2 + x*3 +x*4 =20,06

Answer 1

x + x*2 + x*3 +x*4 =20,06

x * 1 + x * 2 + x * 3 + x * 4 = 20,06

x = ( 1 + 2 + 3 + 4 ) x 20,06

x = 10 x 20,06 

x = 200,6

Chưa chắc đúng :v

Answer 2

X + X*2+X*3+X*4=20,06

X*1+x*2+x*3+x*4=20,06

X=(1+2+3+4)=20,06

X=20,06:10

X=2,006

Answer 3

x + x*2 + x*3 +x*4 =20,06

x * 1 + x * 2 + x * 3 + x * 4 = 20,06

x = ( 1 + 2 + 3 + 4 ) x 20,06

x = 10 x 20,06 

x = 200,6

Answer 4

x + x*2 + x*3 +x*4 =20,06

x * 1 + x * 2 + x * 3 + x * 4 = 20,06

x = ( 1 + 2 + 3 + 4 ) x 20,06

x = 10 x 20,06 

x = 200,6