Rozwiąż równania. a) 3x+1=16 b) 2a+4=3a c) 6b+10=46 d)4t+3=6t e) 4x+12=3x+21 f) 2y+13=5y+4
a) 3x+1=16
3x=16-1
3x=15
x=15:3
x=5
b) 2a+4=3a
2a-3a=-4
-a=-4
a=4
c) 6b+10=46
6b=46-10
6b=36
b=36:6
b=6
d)4t+3=6t
4t-6t=-3
-2t=-3
t=3/2
e) 4x+12=3x+21
4x-3x=21-12
x=9
f) 2y+13=5y+4
2y-5y=4-13
-3y=-9
y=3
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a) 3x+1=16
3x=16-1
3x=15
x=15:3
x=5
b) 2a+4=3a
2a-3a=-4
-a=-4
a=4
c) 6b+10=46
6b=46-10
6b=36
b=36:6
b=6
d)4t+3=6t
4t-6t=-3
-2t=-3
t=3/2
e) 4x+12=3x+21
4x-3x=21-12
x=9
f) 2y+13=5y+4
2y-5y=4-13
-3y=-9
y=3