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d) 5a+8b=14
4a+3b=1
5a+8b=14
5a=14-8b
a=(14-8b):5
4[(14-8b):5]+3b=1
4[14/5-8/5b]+3b=1
56/5-32/5b+3b=1 I*5
56-32b+15b=5
-32b+15b=5-56
-17b=-51 I:(-17)
b=3
a=(14-8*3):5
a=(14-24):5
a=(-10):5
a=-2
{5a+8b=14
{4a+3b=1
{4a=1-3b/:4
{a=1/4-3/4b
{5*(1/4-3/4b)+8b=14
{5/4-15/4b+8b=14
{1 i 1/4 - 3 i 1/4b+8b=14
{-3 i 1/4b + 8b=14- 1 i 1/4
{4 i 3/4b=12 i 3/4
{19/4b=51/4 /: 19/4
{ b= 51/4 * 4/19
{b=2 i 13/19
{a= 1/4- 3/4* 51/19
{ a= 1/4 - 2 i 1/76
{b= 2 i 13/19
{ a=19/76 - 2 i 1/76
{a= - 1 i 58/76
5a+8b=14
4a+3b=1
5a=14-8b
a=(14-8b):5
4[(14-8b):5]+3b=1
4[14/5-8/5b]+3b=1
56/5-32/5b+3b=1 I*5
56-32b+15b=5
-32b+15b=5-56
-17b=-51 I:(-17)
b=3
a=(14-8*3):5
a=(14-24):5
a=(-10):5
a=-2
{5a+8b=14
{4a+3b=1
{5a+8b=14
{4a=1-3b/:4
{5a+8b=14
{a=1/4-3/4b
{5*(1/4-3/4b)+8b=14
{a=1/4-3/4b
{5/4-15/4b+8b=14
{a=1/4-3/4b
{1 i 1/4 - 3 i 1/4b+8b=14
{a=1/4-3/4b
{-3 i 1/4b + 8b=14- 1 i 1/4
{a=1/4-3/4b
{4 i 3/4b=12 i 3/4
{a=1/4-3/4b
{19/4b=51/4 /: 19/4
{a=1/4-3/4b
{ b= 51/4 * 4/19
{a=1/4-3/4b
{b=2 i 13/19
{a= 1/4- 3/4* 51/19
{b=2 i 13/19
{ a= 1/4 - 2 i 1/76
{b= 2 i 13/19
{ a=19/76 - 2 i 1/76
{b=2 i 13/19
{a= - 1 i 58/76