Question

-2x, + X, + 3x3 = 10
10х1 – 5х2 - 15х = 30
х1 х2 - 3x3 = 25​

Answer 1

Step-by-step explanation:

−2x+x+3×3=10

1 Combine -2x and x to get -x.

−x+3×3=10

2 Multiply 3 and 3 to get 9.

−x+9=10

3 Subtract 9 from both sides.

−x=10−9

4 Subtract 9 from 10 to get 1.

−x=1

5 Multiply both sides by −1.

x=−1

10х1 – 5х2 - 15х = 30

1 Multiply 10 and 1 to get 10.

10−5×2−15x=30

2.Multiply 5 and 2 to get 10.

10−10−15x=30

3.Subtract 10 from 10 to get 0.

0−15x=30

4.Anything plus zero results in itself.

−15x=30

5.Divide both sides by -15.

x=30/-15

6.Divide 30 by −15 to get −2

x=−2

I am not able to understand the 3rd one as you have written x1 X2 .

if

possible please write it in the comments I'll see and edit my answer and include that equation too.

hope this will help

thank you