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5•[x:3-7•(24+30:5)]-23=70

Răspuns :

5•[x:3-7•(24+30:5)]-23=70
5•[x:3-7•(24+6)] = 70+23
5•(x:3-7• 30) = 93
5•(x:3-210) = 93
x:3 - 210 = 93:5
x:3 - 210 = 18,6
x:3 = 18,6+210
x:3 = 228,6
x = 228,6×3
x = 658,8