Question

Please solve this questions

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Answer 1

Answer:

The answer Of question No. 3 is

7x + 8x = 90

15x =90

$15x = 90 \\ \\ x = \frac{90}{15} \\ \\ x = 6 \\ so \: the \: value \: of \: 7x = 7 \times 6 = 42 \\ \\ and \: th \: value \: of \: 8x = 8 \times 6 = 48$