Question

Află numărul necunoscut:
a +2436 = 9367 a x 2 x3 = 24
b-5269= 2875 16 X 2:a= 4
9463-c=2897 45:58 a= 63
8 x (3 + a) = 72
(a-5) x6 = 36
(9+ a): 2 = 24

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Answer 1

a+2436=9367

a=9367-2436

a=6931

b-5269=2875

b=2875+5269

b=8144

9463-c=2897

c=9463-2897

c=6566

a*2*3=24

a*6=24

a=24:6

a=4

16*2:a=4

32:a=4

a=32:4

a=8

45:5*a=63

9*a=63

a=63:9

a=7

8*(3+a)=72

3+a=72:8

3+a=9

a=9-3

a=6

(a-5)*6=36

a-5=36:6

a-5=6

a=6+5

a=11

(9+a):2=24

9+a=24*2

9+a=48

a=48-9

a=39

Answer 2

Explicație pas cu pas:

a+2 436=9 367

a=9 367-2 436

a=6 931

v:6 931+2 436=9 367

b-5 269=2 875

b=2 875+5 269

b=8 144

v:8 144-5 269=2 875

9 463-c=2 897

c=9 463-2 897

c=6 566

v:9 463-6 566=2 897

a×2×3=24

a×6=24

a=24:6

a=4

v:4×2×3=8×3=24

16x2:a=4

32:a=4

a=32:4

a=8

v:16×2:8=32:8=4

45:5×a=63

9×a=63

a=63:9

a=7

v:45:5×7=9×7=63

8×(3+a)=72

3+a=72:8

3+a=9

a=9-3

a=6

8×(3+6)=8×9=72

(a-5)×6=36

a-5=36:6

a-5=6

a=6+5

a=11

(11-5)×6=6×6=36

(9+a):2=24

9+a=24×2

9+a=48

a=48-9

a=39

v:(9+39):2=48:2=24