Pomocy 5y=13 ,
Jedna siódma x= -2
-7b= siedem ósmych
7a+7 = 35
2-x=5-2x
69-x = x+ 96
Jedna/druga c +5=c+8
5y=13 /:5
y= 13/5
y=2 i 3/5
1/7x=-2 / : 1/7
x=-2:1/7
x=2*7
x=14
-7b=7/8 / : (-7)
b= 7/8 : (-7)
b= 7/8*(-1/7)
b=-1/8
7a+7=35 / -7
7a=28 /:7
a=4
2-x=5-2x / -2
-x=3-2x / +2x
x=3
69-x=x+96 / -69
-x=x+27 /-x
-2x=27/ :(-2)
x= - 13,5
1/2c+5=c+8 / *2
c+10=2c+16 / -10
c=2c+6 / : 2c
c=6
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5y=13 /:5
y= 13/5
y=2 i 3/5
1/7x=-2 / : 1/7
x=-2:1/7
x=2*7
x=14
-7b=7/8 / : (-7)
b= 7/8 : (-7)
b= 7/8*(-1/7)
b=-1/8
7a+7=35 / -7
7a=28 /:7
a=4
2-x=5-2x / -2
-x=3-2x / +2x
x=3
69-x=x+96 / -69
-x=x+27 /-x
-2x=27/ :(-2)
x= - 13,5
1/2c+5=c+8 / *2
c+10=2c+16 / -10
c=2c+6 / : 2c
c=6
JEST DOBRZE BO SPRAWDZILAM 3 RAZY :D
LICZE NA NAJJ! pozdr. :D