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humit238

Answer:−9a+10b−23

Step-by-step explanation:−9a+3b−a+7b−13+a−10

Combine −9a and −a to get −10a.

−10a+3b+7b−13+a−10

Combine 3b and 7b to get 10b.

−10a+10b−13+a−10

Combine −10a and a to get −9a.

−9a+10b−13−10

Subtract 10 from −13 to get −23.

−9a+10b−23

Answer:

[tex]-9a+10b-23[/tex]

Step-by-step explanation:

[tex]-9a+3b-a+7b-13+a-10[/tex]

[tex]-9a-a+a+3b+7b-13-10[/tex]

[tex](-9a-a+a)+3b+7b-13-10[/tex]

[tex]-9a+(3b+7b)-13-10[/tex]

[tex]-9a+10b-(13+10)[/tex]

[tex]-9z+10b-23[/tex]

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