Question

exercițiul 4 dau coroana!! urgent! ;))

Answer 1

X=frunzele

7a)7+7+7+7=X×7

14+14=X×7

28=X×7

X=4

(P:4×7=28)

8+8+8=3×X

16+8=3×X

24=3×X

X=7

(P:3×7=24)

2×6=X+X

12=X+X

X+X={1+11;2+10;...;12+0}

4×X=X+9+X+X

4×9=9+9+9+9

X=9

2+2+2 __ 2×2

6__4

(6>4)

4+4+4___5×4

12___20

(12<20)

4×8____8+8+8+8

24_____24

(32=32)

5×7______7+7+7+7

35_______28

35>28

Sper că te-am ajutat.