afla nr necunoscut a+2436=9367 b-5269=2875 94-c=2897 ax2x3=24 16x2:a=4 45:5xa=63 8x(3+a)=72 (a-5)x6=36 (9+a):2=24 si acest calcul 1+2x5-(8x5:10+5-63:9)x4-(42:7-32:8) Va rog repede, este pentru sora mea!!
Răspunsuri la întrebare
Răspuns:
Explicație pas cu pas:
a+2436=9367
a = 9367 - 2436 = 6931
b-5269=2875
b = 5269 + 2875 = 8144
94-c=2897
c = 94 - 2897 = -2803
ax2x3=24
a x 6 = 24
a = 24 : 6 = 4
16x2:a=4
32 : a = 4
a = 32 : 4 = 8
45:5xa=63
9 x a = 63
a = 63 : 9 = 7
8x(3+a)=72
3 + a = 72 : 8 = 9
a = 9 - 3 = 6
(a-5)x6=36
a - 5 = 36 : 6 = 6
a = 5 + 6 = 11
(9+a):2=24
9 + a = 24 x 2 = 48
a = 48 - 9 = 39
1+2x5-(8x5:10+5-63:9)x4-(42:7-32:8)
= 1 + 10 - (40 : 10 + 5 - 7) x 4 - (6 - 4)
= 11 - (4 + 5 - 7) x 4 - 2
= 11 - 2 x 4 - 2
= 11 - 8 - 2
= 3 - 2
= 1
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
94-c=2 897
c=94-2 897
c=-2 803
v:94-(-2803)=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
v:8×(3+6)=8×9=72
(a-5)×6=36
(a-5)=36:6
a-5=6
a=6+5
a=11
v:(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
1+2×5-(8×5:10+5-63:9)×4-(42:7-32:8)=
1+2×5-(40:10+5-7)×4-(6-4)=
1+2×5-(4+5-7)×4-2=
1+2×5-(9-7)×4-2=
1+2×5-2×4-2=
1+10-8-2=
11-8-2=
3-2=
1