Question

1)-2а-2*(-а+7)+14 2)2а-(7-2а) 3) 3*(-8x+4)+2*(12x-8)+2x

Answer 1

1) -2а-2*(-а+7)+14=0
-2a+2a-14+14=0
a=0
2)2a-(7-2a)=0
2a-7+2a=0
4a=7
a=7/4
3)3*(-8x+4)+2*(12x-8)+2x=0
-24x+12+24x-16+2x=0
2x-4=0
2x=4
x=2

Answer 2

To solve the expression 1) -2a - 2*(-a+7) + 14 + 2) 2a - (7-2a) + 3) + 3*(-8x+4) + 2*(12x-8) + 2x, we need to simplify it step by step.

Let's start by simplifying the expression within each set of parentheses.

1) -2*(-a+7) can be simplified as 2*(a-7) since multiplying two negative numbers results in a positive number. So, this expression becomes -2a + 14.

2) (7-2a) remains the same.

3) -8x+4 can be simplified as -8x - 4 since multiplying -1 with 4 gives us -4.

4) 12x-8 remains the same.

Now, let's substitute the simplified expressions back into the original expression:

1) -2a - 2*(-a+7) + 14 + 2) 2a - (7-2a) + 3) + 3*(-8x+4) + 2*(12x-8) + 2x = -2a - (2a - 14) + 14 + 2a - (7-2a) + 3 + 3*(-8x - 4) + 2*(12x-8) + 2x = -2a - 2a + 14 + 14 + 2a - 7 + 2a + 3 - 24x - 12 + 24x - 16 + 2x = -4a + 28 + 2a + 2a + 3 - 12 - 16 + 2x = 4a - 4 + 2x

So, the simplified expression is 4a - 4 + 2x.

I hope this helps! Let me know if you have any further questions.