1) 0,25 2 - 4 = 2 2 + 10.5 - 4 = 4 + 1-3 = 5This equation is not true.
2) 7x + 1 + 4 * 7x = 777x + 1 + 28x = 7735x + 1 = 7735x = 76x = 76/35x = 2.17Therefore, x = 2.17
3) 6(2x) - 3t*x - 18 = 012x - 3tx - 18 = 012x - 3tx = 18x(12 - 3t) = 18x = 18 / (12 - 3t)x = 3 / (2 - 0.5t)Therefore, x = 3 / (2 - 0.5t)
1) 0,25 2 - 4 = 2 2 + 1
0.5 - 4 = 4 + 1
-3 = 5
This equation is not true.
2) 7x + 1 + 4 * 7x = 77
7x + 1 + 28x = 77
35x + 1 = 77
35x = 76
x = 76/35
x = 2.17
Therefore, x = 2.17
3) 6(2x) - 3t*x - 18 = 0
12x - 3tx - 18 = 0
12x - 3tx = 18
x(12 - 3t) = 18
x = 18 / (12 - 3t)
x = 3 / (2 - 0.5t)
Therefore, x = 3 / (2 - 0.5t)