Question

Afla numarul necunoscut a×7=84 80÷b=5 c×2=38 6×d=38 72÷e=3 8×f=88 g÷8=12 h×5 =90

Answer 1

A×7=84
A=84:7
A=12


C×2=38
C=38:2
C=19

6×D=38
D=38:6
D=6,(3)

72:e=3
E=72:3
E=24

8×f=88
F=88:8
F=11

G:8=12
G=12×8
G=96

H×5=90
H=90:5
H=18

Answer 2

a ×7 = 84
a = 84 : 7
a = 12
V: 12 × 7 = 84

80 : b = 5
b = 80 : 5
b = 16
V: 80 : 16 = 5

c × 2 = 38
c = 38 : 2
c = 19
V: 19 × 2 = 38

6 × d = 38
d = 38 : 6
d = 6, 2
V: 6,2 × 6 = 38

72 : e = 3
e = 72 : 3
e = 24
V: 72 : 24 = 3

8 x f = 88
f = 88 : 8
f = 11
V: 8 x11 = 88

g : 8 = 12
g = 8 × 12
g = 96
V: 96 : 8 = 12

h × 5 = 90
h = 90 : 5
h = 18
V: 18 × 5 = 90