x + x x 3 = 5820
x x 1 + x x 3 = 5820
x x ( 1 + 3 ) = 5820
x x 4 = 5820
x = 5820 : 4
x = 1455
x + x x 3 = 5820
x x 1 + x x 3 = 5820
x x ( 1 + 3 ) = 5820
x x 4 = 5820
x = 5820 : 4
x = 1455
X+X*3 =5820
X*(3+1)=5820
X*4 =5820
X = 5820:4
X = 1455
x + x x 3 = 5820
x x 1 + x x 3 = 5820
x x ( 1 + 3 ) = 5820
x x 4 = 5820
x = 5820 : 4
x = 1455
x + x x 3 = 5820
x x 1 + x x 3 = 5820
x x ( 1 + 3 ) = 5820
x x 4 = 5820
x = 5820 : 4
x = 1455
x + x x 4 = 5820
x x ( 1 + 4 ) = 5820
x x 5 = 5820
x = 5820 : 5
x = 1164