Question

Запишите равенство, заменив вычитание сложением:а) - 15 - ( - 10) в) 12 - 20 д) а - (+ b)б) 24 - (+26) г) - 8 - 16 е) а - ( -b)

Answer 1

а)-15-(-10) = -15+10=-5

б)24-(+26)= 24-26=-2

в)12-20=-8

г)-8-16=-24

д)а-(+б)=а-б

е)а-(-б)=а+б

Answer 2

а) -15 - (-10)

To replace subtraction with addition, we can use the following rule:

a - (-b) = a + b

Applying this rule to the equation, we have:

-15 - (-10) = -15 + 10

Simplifying the equation, we get:

-15 + 10 = -5

Therefore, the equation -15 - (-10) is equivalent to -5.

в) 12 - 20

To replace subtraction with addition, we can use the following rule:

a - b = a + (-b)

Applying this rule to the equation, we have:

12 - 20 = 12 + (-20)

Simplifying the equation, we get:

12 + (-20) = -8

Therefore, the equation 12 - 20 is equivalent to -8.

г) -8 - 16

To replace subtraction with addition, we can use the following rule:

a - b = a + (-b)

Applying this rule to the equation, we have:

-8 - 16 = -8 + (-16)

Simplifying the equation, we get:

-8 + (-16) = -24

Therefore, the equation -8 - 16 is equivalent to -24.

е) а - (-b)

To replace subtraction with addition, we can use the following rule:

a - (-b) = a + b

Applying this rule to the equation, we have:

а - (-b) = а + b

Therefore, the equation а - (-b) remains the same.

б) 24 - (26)

To replace subtraction with addition, we can use the following rule:

a - b = a + (-b)

Applying this rule to the equation, we have:

24 - (26) = 24 + (-26)

Simplifying the equation, we get:

24 + (-26) = -2

Therefore, the equation 24 - (26) is equivalent to -2.

In summary, the equations after replacing subtraction with addition are: а) -15 - (-10) = -5 в) 12 - 20 = -8 г) -8 - 16 = -24 е) а - (-b) remains the same б) 24 - (26) = -2