1) (x+2)/4 = 0.8=> x+2 = 0.8 * 4=> x+2 = 3.2=> x = 3.2 - 2=> x = 1.2
2) (3.5 - x)/2.3 = 1.2=> 3.5 - x = 2.3 * 1.2=> 3.5 - x = 2.76=> -x = 2.76 - 3.5=> x = 3.5 - 2.76=> x = 0.74
3) x/4.8 + 3.6 = 3.9=> x/4.8 = 3.9 - 3.6=> x/4.8 = 0.3=> x = 0.3 * 4.8=> x = 1.44
4) x/2.7 - 5.16 = 0.9=> x/2.7 = 0.9 + 5.16=> x/2.7 = 6.06=> x = 6.06 * 2.7=> x = 16.362
1) (x+2)/4 = 0.8
=> x+2 = 0.8 * 4
=> x+2 = 3.2
=> x = 3.2 - 2
=> x = 1.2
2) (3.5 - x)/2.3 = 1.2
=> 3.5 - x = 2.3 * 1.2
=> 3.5 - x = 2.76
=> -x = 2.76 - 3.5
=> x = 3.5 - 2.76
=> x = 0.74
3) x/4.8 + 3.6 = 3.9
=> x/4.8 = 3.9 - 3.6
=> x/4.8 = 0.3
=> x = 0.3 * 4.8
=> x = 1.44
4) x/2.7 - 5.16 = 0.9
=> x/2.7 = 0.9 + 5.16
=> x/2.7 = 6.06
=> x = 6.06 * 2.7
=> x = 16.362