Odpowiedź:
a) x+7= 2 i 3/5
x= 2 i 3/5 -7
x= 2 i 3/5- 6 i 5/5
x= - 4 i 2/5
b) 14-x= 8
-x= 8 -14
-x= -6 /*(-1)
x=6
c) 6-2x = 9-x
-2x +x= 9 -6
-x = 3 /*(-1)
x= - 3
d) 7x +3= 6x-4
7x-6x = -4 -3
x= - 7
e) 2x +10= x- 9 i 1/2
2x-x = - 9 i 1/2 -10
x= - 19 i 1/2
f) 4x= 15 /:4
x= 15/4= 3 i 3/4
g) 6x = 3 i 1/8 /:6
x= 25/8 *1/6
x= 25/48
h) -5x = 7,3 /:(-5)
x= 7 i 3/10 : (-5)= 73/10 *(-1/5)
x= - 73/50= - 1 i 23/50
i) x/8 = 14 /*8
x= 112
j) x/5 = 7 i 3/7 /*5
x= 52/7 *5
x= 260/7= 37 i 1/7
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Verified answer
Odpowiedź:
a) x+7= 2 i 3/5
x= 2 i 3/5 -7
x= 2 i 3/5- 6 i 5/5
x= - 4 i 2/5
b) 14-x= 8
-x= 8 -14
-x= -6 /*(-1)
x=6
c) 6-2x = 9-x
-2x +x= 9 -6
-x = 3 /*(-1)
x= - 3
d) 7x +3= 6x-4
7x-6x = -4 -3
x= - 7
e) 2x +10= x- 9 i 1/2
2x-x = - 9 i 1/2 -10
x= - 19 i 1/2
f) 4x= 15 /:4
x= 15/4= 3 i 3/4
g) 6x = 3 i 1/8 /:6
x= 25/8 *1/6
x= 25/48
h) -5x = 7,3 /:(-5)
x= 7 i 3/10 : (-5)= 73/10 *(-1/5)
x= - 73/50= - 1 i 23/50
i) x/8 = 14 /*8
x= 112
j) x/5 = 7 i 3/7 /*5
x= 52/7 *5
x= 260/7= 37 i 1/7
Szczegółowe wyjaśnienie: