ANSWER
x = 8
Step-by-step explanation
We have to find the value of x for which:
-0.5x + 1.1 = -2.9
To do this, first we have to collect like terms:
-0.5x = -2.9 - 1.1
=> -0.5x = -4.0
Divide through by -0.5:
=> x = -4.0 / -0.5
x = 8
That is the value of x.