EQUAZIONI ALGEBRICHE INTERE PRIMO GRADO n°3

2x – 4 = 6
1. x = 5
2. x = 2
3. x = 1
4. x = 10
3x – 4 = x + 12
1. x = 8
2. x = – 6
3. x = – 1
4. x = 0
3x – 5 = 3x + 13
1. x = 18
2. impossibile
3. x = – 18
4. x = 0
7x – 1 = 3x – 13
1. x = 3
2. x = 1
3. x = – 3
4. x = 10
(x – 1)(x – 2) + 4 = (x – 1)(x – 1) + 3
1. x = 11
2. x = – 2
3. x = – 7
4. x = 2
3(2x – 5) + 1 = 7x – 2(x – 2)
1. x = 9
2. x = – 20
3. x = – 1
4. x = 18
(2 – 5x)(2 + 5x) = 5(1 + 2x) – (5x + 2)(5x + 2) – 10x
1. x = 20
2. x = – 3/20
3. x = 3/20
4. x = 3
x – 3/2 = 1/2
1. x = 1/2
2. x = – 2
3. x = 2
4. x = 0
– 6x – x + 1 = – 1 + 6x + 1 – x
1. impossibile
2. indeterminata
3. x = 12
4. x = 1/12
0,1x = 0,3
1. x = 3
2. x = 10
3. x = – 0,1
4. x = 0,3