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{[4×(5×x+7)×8+6]÷10}÷119=1

Răspuns :

{[32(5x+7)+6]/10}/119=1
[(160x+230)/10]/119=1
(16x+23)/119=1
16x+23=119
16x=96
x=6
{[4×(5×x+7)×8+6]÷10}=119
[4×(5×x+7)×8+6]=119×10=1190
[4×(5×x+7)×8]=1190-6=1184
4×(5×x+7)=1184÷4
4×(5×x+7)=296
=5×x+7=296:4
=5×x+7=74
=5×X=74-4
X=70:5
X=14