Question

(7¹⁰-7⁹)÷(7⁹-7⁸) ajutor vă rog​

Answer 1

Răspuns:

$7 {}^{9}(7 - 1) \div 7 {}^{8} (7 - 1) = 7$

Answer 2

${7}^{9} (7 - 1) \div {7}^{8}(7 - 1) \\ ( {7}^{9} \div {7}^{8} )(7 - 1) = 7 \times 6 = 42$

Explicatie:am dat factor comun