(1) | | | | | | | | | | | | | | | | | | | | | | | 5 | ( | x | + | 4 | y | + | 7 | ) | + | 9 | ( | 10 | x | − | 9 | y | − | 1 | ) | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | = | 5 | x | + | 5 | × | 4 | y | + | 5 | × | 7 | + | 9 | × | 10 | x | − | 9 | × | 9 | y | − | 9 | = | 95 | x | − | 61 | y | + | 26 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | = | 6 | × | 8 | p | + | 6 | × | 6 | + | 8 | × | 6 | p | + | 8 | × | 2 | = | 96 | p | + | 52 | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | = | 9 | × | 10 | p | + | 9 | + | 4 | × | 3 | p | + | 4 | × | 8 | = | 102 | p | + | 41 | | | | | | | | | | | | | | | | | | | | | | | |
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(4) | | | | | | | | | | | | | | | | | | | | | | | | 6 | ( | 7 | p | − | 3 | q | + | 6 | ) | − | 10 | ( | 4 | p | − | 6 | q | + | 1 | ) | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | = | 6 | × | 7 | p | − | 6 | × | 3 | q | + | 6 | × | 6 | − | 10 | × | 4 | p | + | 10 | × | 6 | q | − | 10 | = | 2 | p | + | 42 | q | + | 26 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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(5) | | | | | | | | | | | | | | | | | | | | | | | | 6 | ( | 5 | a | + | 9 | b | + | 2 | ) | − | 3 | ( | 5 | a | + | 2 | b | − | 7 | ) | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | = | 6 | × | 5 | a | + | 6 | × | 9 | b | + | 6 | × | 2 | − | 3 | × | 5 | a | − | 3 | × | 2 | b | + | 3 | × | 7 | = | 15 | a | + | 48 | b | + | 33 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | = | 9 | × | 8 | u | − | 9 | v | + | 9 | × | 2 | + | 9 | × | 10 | u | − | 9 | v | + | 9 | × | 8 | = | 162 | u | − | 18 | v | + | 90 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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