a 712-4 = 78
b x6-3 = x3
c x5-5 = x0 = 1(x ≠ 0)
d 108-2 = 106
e a6-1 = a5
g 310+8-3 = 315
\(a,=7^{12-4}=7^8\\ b,=x^{6-3}=x^3\\ c,=x^{5-5}=x^0\\ d,=10^{8-2}=10^6\\ e,=a^6:a^1=a^{6-1}=a^5\)
\(g,=\left(3^{10+8}\right):3^3=3^{18}:3^3=3^{18-3}=3^{15}\)
\(a,\)\(=7^{12-4}=7^8\)
\(b,=x^{6-3}=x^3\)
\(c,x^{5-5}=x^0=1\)
\(d,10^{8-2}=10^6\)
\(e,a^{6-1}=a^5\)
\(g,=3^{10+8-3}=3^{15}\)