Odpowiedź:
a.
-3x =2x -10
-3x - 2x = -10
-5x = -10 /:(-5)
x = 2
b.
2x -2 =7-x
2x + x = 7 + 2
3x = 9
x = 3
c.
10=4-2x
2x = 4 - 10 /:2
x = -6/2 = -3
d.
0,5y=7-3y
0,5y + 3y = 7
3,5y = 7 /:3,5
y = 2
e.
-2x +1=4
-2x = 4 - 1 /:(-2)
x = -3/2 = -1 1/2
f.
2*(3t+1)=x
x = 6t + 2
g.
2t -(3t +1)=6
2t - 3t - 1 = 6
-t = 6 + 1 /*(-1)
t = -7
h.
-(4+x)=6*(1-x)
i.
4*(x-1)=6*(1*x)
4x - 4 = 6x
4x - 6x = 4
-2x = 4 /:(-2)
x = 2
Szczegółowe wyjaśnienie: