Question

Va rog urgent va dau coroana si 10 puncte!!!!

Answer 1

a) (a+81:9)×5=295

(a+9)×5=295

a+9=295:5

a+9=59

a=59-9

a=50( dinti are vulpea urecheata)

b) (b×4+20):2=54

b×4+20=54×2

b×4+20=108

b×4=108-20

b×4=88

b=88:4

b=22( ore doarme lenesul pe zi)

Answer 2

Explicație pas cu pas:

(a+81:9)×5=295

(a+9)×5=295

(a+9)=295:5

a+9=59

a=59-9

a=50

v:(50+81:9)×5=

(50+9)×5=

59×5=

295

(b×4+20):2=54

(b×4+20)=54×2

(b×4+20)=108

b×4=108-20

b×4=88

b=88:4

b=22

v:(22×4+20):2=

(88+20):2=

108:2=

54