I calculated Vo for this ideal op amp circuit using the formula: R2/R1(V2-V1) = Vo
I believe the correct Vo = -14V I did not get this result using the above formula. It seems the formula is not correct for this circuit but I don't understand why. Would someone please enlighten me? Thank you.

^{simulate this circuit – Schematic created using CircuitLab}

I calculated Vo for this ideal op amp circuit using the formula: \$R_2\$/\$R_1\$(\$V_2\$-\$V_1\$) = \$V_o\$
I believe the correct \$V_o\$ = -14V I did not get this result using the above formula. It seems the formula is not correct for this circuit but I don't understand why. Would someone please enlighten me?

^{simulate this circuit – Schematic created using CircuitLab}