Question

Раскрой скобки и найди значение выражения: а) 4,5+(11+6,2); б) 3,3+(2,5-6); в)9 2/3-(5 2/3+1/4)

Answer 1

а)21,7
б)-0,2
в)3 3/4
а)11+6,2=17,2
4,5+17,2=21,7
б)2,5-6=-3,5
3,3+(-3,5)=-0,2
в)5 2/3+1/4=5 11/12
9 2/3-5 11/12=3 3/4

Answer 2

А)4,5+(11+6,2)=4.5+6.2+11=10.7+11=21.7 
Б)3.3+(2.5-6)=3.3+2.5-6=5.8-6=-0.2
В)9 2/3-(5 2/3+1/4)=9 2/3-5 2/3-1/4=4 2/3-1/4=4 5/12

Answer 3

I can help you with math problems. Here are the steps to solve the expressions:

а) 4,5 + (11 + 6,2)

- First, add the numbers inside the parentheses: 11 + 6,2 = 17,2 - Then, add the result to 4,5: 4,5 + 17,2 = 21,7

The final answer is 21,7

б) 3,3 + (2,5 - 6)

- First, subtract the numbers inside the parentheses: 2,5 - 6 = -3,5 - Then, add the result to 3,3: 3,3 + (-3,5) = -0,2

The final answer is -0,2

в) 9 + 2/3 - (5 + 2/3 + 1/4)

- First, add the numbers inside the parentheses: 5 + 2/3 + 1/4 = 6 + 5/12 - Then, subtract the result from 9 + 2/3: 9 + 2/3 - (6 + 5/12) = 2 + 7/12

The final answer is 2 + 7/12