[ 72÷( 48-x )+58 ]÷10=14
72÷( 48-x )+58 = 14×10
72÷( 48-x )+58 = 140
72÷( 48-x ) = 140-58
72÷( 48-x ) = 82
48 -X = 72/82
X = 48 -72/82
X = 48 - 36/41
X = (48×41-36)/41
X = (1968-36)/41
X = 1932/41
verificare:
(72 : 36/41+58):10 =
= (72×41/36+58):10 =
= (2952/36+58):10 =
= (82+58):10 =
= 140:10 =
= 14 (adevarat)
