The solutions for the given equations are:
1) 0.3x + 8 = 20.3x = 2 - 80.3x = -6x = -6 / 0.3x = -20
2) 4x + 7 = 54x = 5 - 74x = -2x = -2 / 4x = -0.5
3) 3x + x + 5x = 2.19x = 2.1x = 2.1 / 9x = 0.2333
Therefore, the solutions for the equations are:1) x = -202) x = -0.53) x = 0.2333
The solutions for the given equations are:
1) 0.3x + 8 = 2
0.3x = 2 - 8
0.3x = -6
x = -6 / 0.3
x = -20
2) 4x + 7 = 5
4x = 5 - 7
4x = -2
x = -2 / 4
x = -0.5
3) 3x + x + 5x = 2.1
9x = 2.1
x = 2.1 / 9
x = 0.2333
Therefore, the solutions for the equations are:
1) x = -20
2) x = -0.5
3) x = 0.2333