Question

СРОЧНО!
А)9+Х=2,7. Б) -7,2+Х= -9,6
В)а-4 3/4= -6 1/2

Answer 1

Ответ:

$9 + x = 2.7 \\ x = 2.7 - 9 \\ x = - 6.3$

$- 7.2 + x = - 9.6 \\ x = - 9.6 + 7.2 \\x = - 2.4$

а-4 3/4=-6 1/2

а-4.75=-6.5

а=-6.5+4.75

а=-1.75

$\displaystyle\left\{{{} \atop{}} \right.$

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