Substitute n=-7 into the equation:
5x - (-7) = 3.8x + 4 + 1.2x
Simplify by multiplying:
5x + 7 = 3.8x + 4 + 1.2x
Combine like terms:
5x + 7 = 5x + 4
Subtract 5x from both sides:
7 = 4
This equation is inconsistent and has no solution.
Substitute n=-7 into the equation:
5x - (-7) = 3.8x + 4 + 1.2x
Simplify by multiplying:
5x + 7 = 3.8x + 4 + 1.2x
Combine like terms:
5x + 7 = 5x + 4
Subtract 5x from both sides:
7 = 4
This equation is inconsistent and has no solution.