Op amp with feedback
simulate this circuit &ndash; Schematic created using CircuitLab

Figure 1. OP's schematic redrawn with component designators and voltage reference points added.

\$ V_- = \frac {R_1}{R_1 + R_2}V_O \tag 1\$. 

Since R1 = R2 then \$ V_O = 2 V_- \tag 2\$.

If the op-amp is working in linear negative feedback mode then \$ V_- = V_+ \$ so \$ V_O = 2 V_+ \tag 3 \$.

Summing the currents into V+ we get 

$$ \begin{align} I_{RL} &amp; = I_{R3} + I_{R4} \tag 4 \\
&amp; = \frac {V_{IN} - V_{+}}{R3} + \frac{V_O - V_+}{R4} \tag 5 \\
&amp; = \frac {V_{IN} - V_{+}}{R3} + \frac{2V_+ - V_+}{R4}  \tag 6 \\
&amp; = \frac {V_{IN} - V_{+}}{R} + \frac{V_{+}}{R} \tag 7\\ 
&amp; = \frac{ V_{IN}}{R} \tag 8
\end{align}
$$

Perhaps surprisingly the output current is independent of RL.

Note how difficult it would be to write these equations without the component designations requested in my comment to your question.