Question

Afla nr. necunoscut 5*x=10:2;x:9=8:2;12:4=9:x;x:5=36:4;136*2-3*x=1605;279*5+x*5​

Answer 1

Răspuns:

5×x =10÷2 5×x =5 x=5÷5 x=1

Explicație pas cu pas:

x÷9=8÷2

x÷9=4

x=9×4

x=36

12÷4=9×x

3=9÷x

x=9×3

x=27

x÷5=36÷4

x÷5=9

x=9×5

x=45

279×5+x×5

1395+x×5

x=1395-5

x=1390