Question

(5x5 + 6x6 - r) +685 -5x10 = 9: 3 -​

Answer 1

Explicație pas cu pas:

(5×5+6×6-r)+685-5×10=9÷3-

(25+36-r)+685-50=3-

(61-r)+685-50=3

(61-r)+685=50+3

(,61-r)+685=53

61-r= 685-53

61-r= 632

r= 632-61

r= 581