Question

2а - (2,4 - а) - (5а - 4,7)

Answer 1

2a-2,4+a-5a+4,7= -2a+2,3

Answer 2

2а - (2,4 - а) - (5а - 4,7)=2а-2,4+а-5а+4,7=2а+а-5а-2,4+4,7=-2а+2,3

Answer 3

To simplify this expression, we can use the distributive property of multiplication over addition/subtraction, as well as combine like terms.

Starting with the expression:

2а - (2,4 - а) - (5а - 4,7)

First, we can simplify the parentheses by distributing the negative sign:

2а - 2,4 + а - 5а + 4,7

Next, we can combine like terms (2a and -5a):

-3а + 2,3 - 2,4

Finally, we can combine the constant terms (-2.4 and 2.3):

-3а - 0.1

So the simplified expression is:

-3а - 0.1