Question

23. Află termenul necunoscut:
9 x 7-a = 5 x 7
b + 10 x 3 = 8 x 8
91 - (c + 3 x 9) = 6 x 8
d - 7 x8 = 9 x 4​

Answer 1

Răspuns:

9×7-a=5×7

9×7=63

5×7=35

63-A=35

A=63-35=28

B+10×3=8×8

B=10×3=30

8×8=64

B+30=64

B=64+30 =94

91-(c+3×9)=6×8

C= 9×3=27

C=6×8=48

91-C+27=48

C= 48+27=75

91-C=75

C=91-75=16

D-7×8=9×4

D=7×8=56

9×4=36

D-56=36

D=56+36=92

Sper ca te-am ajutat!!