The plate is subjected to four parallel forces as shown, Find the $x$ coordinate of the single resultant force $R$ acting on the plate

Given that the $F1=112$ N $,$ F$2=56$ N $,$ and the resultant moment $M_x=960iN.m,$ the resultant moment $M_z=-2110k$ N$.$m

a$.3\mathrm{.}3m$

b$.7\mathrm{.}2m$

c$.-8\mathrm{.}9m$

d$.2\mathrm{.}4m$

e$.8\mathrm{.}9m$

The correct answer is: $8\mathrm{.}9m$