Ответ:
a. +(m-3+ba)= m - 3 + ba
b. -(a-b+c)= -a+b-c
c. (15t+23-x)= 15t+23-x
d. -(-7-9k+11)=7+9k-11=9k-4
(2.5+38)-(0.5-22)= 2.5 + 38 - 0.5 + 22 = 62
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Ответ:
a. +(m-3+ba)= m - 3 + ba
b. -(a-b+c)= -a+b-c
c. (15t+23-x)= 15t+23-x
d. -(-7-9k+11)=7+9k-11=9k-4
(2.5+38)-(0.5-22)= 2.5 + 38 - 0.5 + 22 = 62