Question

5a+2a-27=? 3(5a-2a) -32=? 5(2a+7a) -32a=?

Answer 1

1)7a-27
7a=27
a=27/7
a=3.857
2)15a-6a-32=9a-32
a=32/9
a=3.556
3)10a+35a-32a=45a-32a=13a
a=-13
ПОдставляем 5(2*(-13)+ 7 * (-13)) -32* (-13)=5* (-117) -   =-585 +416= -169

Answer 2

Let's solve the equations step by step:

1. 5a + 2a - 27: Combining like terms, we have 7a - 27 as the final expression.

2. 3(5a - 2a) - 32: Inside the parentheses, 5a - 2a simplifies to 3a. Multiplying by 3, we get 9a. Subtracting 32 from this, the final expression is 9a - 32.

3. 5(2a + 7a) - 32a: Inside the first set of parentheses, 2a + 7a simplifies to 9a. Multiplying by 5, we get 45a. Subtracting 32a from this, the final expression is 45a - 32a, which simplifies to 13a.

Therefore, the final expressions are:

1. 7a - 27
2. 9a - 32
3. 13a