Answer:
(a) Let \['x'\] be the number. Then according to the question, we get \[4+8x=60\] \[\Rightarrow \] \[8x=60-4\] \[\Rightarrow \] \[x=\frac{56}{8}=7\] Therefore, the number is 7. (b) Let \['x'\] be the number. Then according to the question, we get \[\frac{1}{5}\times x-4=3\] \[\Rightarrow \] \[\frac{x}{5}=3+4\] \[\Rightarrow \] \[x=7\times 5=35\] Therefore, the number is 35. (c) Let \['x'\]be the number. Then according to the question, we get \[\frac{3x}{4}+3=21\] \[\Rightarrow \] \[\frac{3x}{4}=21-3\] \[\Rightarrow \] \[3x=18\times 4\] \[\Rightarrow \] \[x=\frac{72}{3}=24\] Therefore, the number is 24. (d) Let \['x'\] be the number. \[2x-11=15\] \[\Rightarrow \] \[2x=15+11\] \[\Rightarrow \] \[x=\frac{26}{2}=13\] Therefore, the number is 13. (e) Let \['x'\] be the number The according to the question, we get \[50-3x=8\] \[\Rightarrow \] \[3x=50-8\] \[\Rightarrow \] \[x=\frac{42}{3}=14\] Therefore, the number is 14. (f) Let \['x'\] be the number, Then according to the question, we get \[\frac{x+19}{5}=8\] \[\Rightarrow \] \[x+19=8\times 5\] \[\Rightarrow \] \[x=40-19=21\] Therefore, the number is 21. (g) Let \['x'\] be the number Then according to the question, we get \[\frac{5}{2}x-7=23\] \[\Rightarrow \] \[\frac{5}{2}x=23+7\] \[\Rightarrow \] \[\frac{5}{2}x=30\] \[\Rightarrow \] \[5x=60\] \[\Rightarrow \] \[x=\frac{60}{5}=12\]
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