Odpowiedź :
a) 10x + 4 = 14 | -4
10x = 10 | :10
x = 1
b) -2x+2=-7 | -2
-2x=-5 | : (-2)
x = 2.5
c) -3x + 4 = -5x - 1 | + 3x
4 = -2x - 1 | + 1
5 = -2x | : (-2)
(-2.5) = x
d) 6 + 6 + x + x = 36
12 + 2x = 36 | - 12
2x = 24 | 2
x = 12
prostokąt o bokach 6 i 12
10x = 10 | :10
x = 1
b) -2x+2=-7 | -2
-2x=-5 | : (-2)
x = 2.5
c) -3x + 4 = -5x - 1 | + 3x
4 = -2x - 1 | + 1
5 = -2x | : (-2)
(-2.5) = x
d) 6 + 6 + x + x = 36
12 + 2x = 36 | - 12
2x = 24 | 2
x = 12
prostokąt o bokach 6 i 12