Question

afla numerele necunoscute si verifica:
300-8xa-56=100
5y+36x4+36x3+36x2=504
a:20-361-209-55:5-49=90
ajutor imi trebuie acum dau coroana!!!!

Answer 1

300-8×a=156
8×a=144
a=144÷8=18

5y+36×4+36×3+36×2=504
5y+144+108+72=504
5y=504-72-108-144
5y=180
y=180÷5
y=36

Sper ca te-am ajutat

Answer 2

300-8xa-56=100
300-8×a==100+56
300-8×a=156
8×a=300-156
8×a=144
a=144÷8
a=18

5y+36x4+36x3+36x2=504
5y+144+108+72=504
5y=504-144-108-72
5y=180
y=180:5
y=36

a:20-361-209-55:5-49=90
a:20-361-209-11-49=90
a:20=90+49+11+209+361
a:20=720
a=720:20
a=306