Question

Решите примеры 1)-70: (-7)+2*(-3)-(-38) 2)(-15-63: (-9))*(-4-4) 3)(-3-4)*5+(-40): (-10)

Answer 1

$- 70 \div ( - 7) + 2 \times ( - 3) - ( - 38) = 42 \\ 1) - 70 \div ( - 7) = 10 \\ 2)2 \times ( - 3) = - 6 \\ 3)10 + ( - 6) - ( - 38) = 10 - 6 + 38 = 4 + 38 = 42$

$( - 15 - 63 \div ( - 9)) \times ( - 4 - 4) =64 \\ 1) - 63 \div ( - 9) = 7 \\ 2) - 15 + 7 = - 8 \\ 3) - 4 - 4 = - 8 \\ - 8 \times ( - 8) = 64$

$( - 3 - 4) \times 5 + ( - 40) \div ( - 10) = - 31 \\ 1) - 3 - 4 = - 7 \\2) - 7 \times 5 = - 35 \\ 3) - 40 \div (- 10) = 4 \\ 4) - 35 + 4 = - 31$