10 x [ 883 - x x ( 48 : 8 )] + 250 = 1 400 sunt calasa a 4a a urgenntttttttttttt

[tex]\bf 10 \cdot[ 883 - x \cdot ( 48 : 8 )] + 250 = 1 400[/tex]

[tex]\bf 10 \cdot( 883 - x \cdot 6)+ 250 = 1 400[/tex]

[tex]\bf 10 \cdot( 883 -6x)+ 250 = 1 400[/tex]

[tex]\bf 8830 -60x + 250 = 1 400[/tex]

[tex]\bf 9080 -60x = 1 400[/tex]

[tex]\bf 9080 = 1 400 +60x[/tex]

[tex]\bf 9080 - 1 400= 60x[/tex]

[tex]\bf 7680=60x\:\:\:|:60\:\:\text{\it impartim toata relatia cu 60}[/tex]

[tex]\boxed{\bf x = 128}[/tex]

Răspuns:

128

Explicație pas cu pas:

Salut!

10 × [883 - x × ( 48 : 8 )] + 250 = 1400

10 × (883 - x × 6) + 250 = 1400

10 × (883 - 6x) = 1150

10 × 883 - 60x = 1150

8830 - 60x = 1150

-60x = 1150 - 8830

-60x = -7680

x = 128

Succes!