105. 1) 12x = 60; 2) 33y 132; 3) 512=357; 4) 2x 15 = 13; 5) 7y - 25 = 45; 6) 130 4x = 70; 7) 49- 3x = 34; 8) 9y - 89 = 55; 9) 74 - 82 = 2.​

Ответ:

(150-20):x=65

Х=150-20

Х=130

Х=130:65

Х=2

(150-20):2=65

(х+4)х7=350

Х=350:7

Х=50

Х=50-4

Х=46

(46+4)*7=350