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Maurinko [17]
3 years ago
9

Simplifying Expression! Help Please!

Mathematics
1 answer:
Fittoniya [83]3 years ago
3 0

Answer

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













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