+980 $$11\frac{1}{4}-?=\frac{1}{2}$$
$$11\frac{1}{4}-10\frac{3}{4}=\frac{1}{2}$$ (for addition simply add $$-10\frac{3}{4}$$)
$$11\frac{1}{4}/?=\frac{1}{2}$$
$$\frac{11\frac{1}{4}}{22\frac{1}{2}}=\frac{1}{2}$$
$$11\frac{1}{4}\times?=\frac{1}{2}$$
$$11\frac{1}{4}\times\frac{2}{45}=\frac{1}{2}$$ (I found this by saying 11.25*x = 0.5 therefore 0.5/11.25 = x = 2/45)
I'm not sure if this is what you were asking but I hope it helped anyway.
+980 $$11\frac{1}{4}-?=\frac{1}{2}$$
$$11\frac{1}{4}-10\frac{3}{4}=\frac{1}{2}$$ (for addition simply add $$-10\frac{3}{4}$$)
$$11\frac{1}{4}/?=\frac{1}{2}$$
$$\frac{11\frac{1}{4}}{22\frac{1}{2}}=\frac{1}{2}$$
$$11\frac{1}{4}\times?=\frac{1}{2}$$
$$11\frac{1}{4}\times\frac{2}{45}=\frac{1}{2}$$ (I found this by saying 11.25*x = 0.5 therefore 0.5/11.25 = x = 2/45)
I'm not sure if this is what you were asking but I hope it helped anyway.
