3 years ago

Given m n, find the value of x and y m (7x+18) (5x-6) (3y+11) n

Mathematics

1 answer:

Dmitry_Shevchenko [17]3 years ago

6 0

Answer:

$7x + 18 + 5x - 6 = 180 \\ 12x + 12 = 180 \\ 12x = 180 - 12 = 168 \\ x = 168 \div 12 =14 \\ 3y + 11 = 7x + 18 = 7 \times 14 + 18 \\ 3y + 11 = 98 + 18 = 116 \\ 3y = 116 - 11 = 105 \\ y = 105 \div 3 = 35$

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