rozwiąż równania:
a) 7x+9=5x+21
b) 4z+3=z+21
c)11t+48=15t+4
7x-5x=21-9 2x=12 x=6 4z+3=z+39 4z-z=39-3 3z=36 z=12 11t+48=15t+4 11t-15t=4-48 -4t=-44 t=11
a)7x+9=5x+21
7x-5x=21-9
2x=12 /:2
x=6
b)4z+3=z+21
4z-z=21-3
3z=18 /:3
z=6
11t-15t=4-48
-4t=-44 /:(-4)
t=11
Mam nadzieje,że pomogłam
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7x-5x=21-9
2x=12
x=6
4z+3=z+39
4z-z=39-3
3z=36
z=12
11t+48=15t+4
11t-15t=4-48
-4t=-44
t=11
a)7x+9=5x+21
7x-5x=21-9
2x=12 /:2
x=6
b)4z+3=z+21
4z-z=21-3
3z=18 /:3
z=6
c)11t+48=15t+4
11t-15t=4-48
-4t=-44 /:(-4)
t=11
Mam nadzieje,że pomogłam