Question

575-b*32-45=50
(100*d-110):39=10

Answer 1

575-b×32-45=50
=50+45:32+575
=95:32+575
=3+575
=578

(100×d-110):39=10
=10×39+110:100
=390+110:100
=500:100
=5

Answer 2

575 - b × 32 - 45 = 50

575 - b × 32 = 50 + 45

575 - b × 32 = 95

b × 32 = 575 - 95

b × 32 = 480

b = 480 : 32

b = 15

Verificare :

575 - 15 × 32 - 45 =

575 - 480 - 45 =

95 - 45 = 50
______________________________

( 100 × d - 110 ) : 39 = 10

100 × d - 110 = 10 × 39

100 × d - 110 = 390

100 × d = 390 + 110

100 × d = 500

d = 500 : 100

d = 5

Verificare :

( 100 × 5 - 110 ) : 39 =

( 500 - 110 ) : 39 =

390 : 39 = 10