Question

1. Обчисли значення виразу. a) (-8 + 10-7): (-5); Б) (-49) -8 (-7). 4; B) (-90 - 40 - 20): 15​

Answer 1

Відповідь:

a) (-8+10-7)=-5

b) (-49)-8(-7)=7

c)(-90-40-20):15=-10

Покрокове пояснення:

не поняла что насчет второго примера, там ещё в конце нужно на 4 умножить или что…

Answer 2

a) (-8 + 10 - 7) / (-5): First, let's simplify the expression inside the parentheses: (-8 + 10 - 7) = -5 Now divide -5 by -5: -5 / -5 = 1 Therefore, the value of the expression is 1.

b) (-49) - 8 (-7) / 4: Let's simplify the expression inside the parentheses first: -8 (-7) = 56 Now let's calculate the division: (-49) - 56 / 4 Perform the division: 56 / 4 = 14 Now subtract: (-49) - 14 = -63 Therefore, the value of the expression is -63.

c) (-90 - 40 - 20) / 15: First, let's simplify the expression inside the parentheses: (-90 - 40 - 20) = -150 Now divide -150 by 15: -150 / 15 = -10 Therefore, the value of the expression is -10.