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Poziom A przykład G,H,I,J
i w B i C to samo

Odpowiedź:
Poziom A
g) x - 2 = 8
x = 8 + 2
x = 10
Spr. : L = x - 2 = 10 - 2 = 8
P = 8
L = P
h) c - 10 = 13
c = 13 + 10
c = 23
Spr. : L = c - 10 = 23 - 10 = 13
P = 13
L = P
i) x + 7 = 9
x = 9 - 7
x = 2
Spr. : L = x + 7 = 2 + 7 = 9
P = 9
L = P
Poziom B
g) x • 2 = 8
x = 8 : 2
x = 4
Spr. : L = x • 2 = 4 • 2 = 8
P = 8
L = P
h) 10 • t = 130
t = 130 : 10
t = 13
Spr. : L = 10 • x = 10 • 13 = 130
P = 130
L = P
i) 15 • x = 90
x = 90 : 15
x = 6
Spr. : L = 15 • x = 15 • 6 = 90
P = 90
L = P
j) s • 9 = 36
s = 36 : 9
s = 4
Spr. : L = s • 9 = 4 • 9 = 36
P = 36
L = P
Poziom C
g) 3 • x + 2 = -19
3 • x = -19 - 2
3 • x = -21 /: 3
x = -7
Spr. : L = 3 • x + 2 = 3 • (-7) + 2 = -21 + 2 = = -19
P = -19
L = P
h) 6 • c - 10 = 14
6 • c = 14 + 10
6 • c = 24 /: 6
c = 4
Spr. : L = 6 • c - 10 = 6 • 4 - 10 = 24 - 10 = 14
P = 14
L = P
i) 8 • x + 3 = 43
8 • x = 43 - 3
8 • x = 40 /: 8
x = 5
Spr. : L = 8 • x + 3 = 8 • 5 + 3 = 40 + 3 = 43
P = 43
L = P
j) 5 • s - 9 = -6
5 • s = -6 + 9
5 • s = 3 /: 5
s = 0,6
Spr. : L = 5 • s - 9 = 5 • 0,6 - 9 = 3 - 9 =
= -6
P = -6
L = P
Pozdrawiam.
Odpowiedź:
x-2=8 c-10=13 x+7=9 s-9=6
×=8+2 c=13+10 ×=9-7 s=6+9
x=10 c=23 x=2 s=15
x×2=8 10×t=130 15×x=90 s×9=36
2x=8/:2 10t=130/:10 15x=90/:15 9s=36/:9
x=4 t=13 x=6 s=4
3×x+2=-19 6×c-10=14 8×x+3=43 5×s-9=-6
3x=-19-2 6c=14+10 8x=43-3 5s=-6+9
3x=-21/3 6c=24/:6 8x=40/:8 5s=3/5
x=-7 c=4 x=5 s=3/5