Question

Simplifying Expression! Help Please!

Answer 1

1.
`2a+3b-a=a+3b`

2.
`(4x+3y)-(2x-5y)=2x+8y`

3.
`-3(2x-1)-5=-6x-2`

4.
`7xy-2xz+4xz-12xyz+2zx=7xy+4xz-12xyz`

5.
`-3(2x-5)-4(x+7)=-10x-13`

Step-by-step-explanation

1. The given expression is
`2a+3b-a`

Regroup the terms to obtain;

`=2a-a+3b`

Simplify to get;

`=a+3b`

2. The given expression is
`(4x+3y)-(2x-5y)`

Expand the brackets to get;

`=4x+3y-2x+5y`

Regroup the terms to get;

`=4x-2x+3y+5y`

Simplify

`=2x+8y`

3. The given expression is
`-3(2x-1)-5`

Expand the brackets to get;

`=-6x+3-5`

Simplify;

`=-6x-2`

4. The given expression is
`7xy-2xz+4xz-12xyz+2zx`

Regroup the terms to get;

`=7xy-2xz+2zx+4xz-12xyz`

Apply the commutative property of multiplication to get;

`=7xy-2xz+2xz+4xz-12xyz`

Simplify;

`=7xy+4xz-12xyz`

5. The given expression is
`-3(2x-5)-4(x+7)`

Expand the brackets to get;

`=-6x+15-4x-28`

Regroup the terms to get;

`=-6x-4x-28+15`

Simplify;

`=-10x-13`