Respuesta :

1) put them in to one problem: 2a+10b-c-3a+5b+c
2) combine like terms: 2a+(-3a)= -a , 10b+5b = 15b , -c+c= 0
3) rewrite problem: -a+15b
The answer is -a+15b

Explanation: so you have to add together the like terms, the C’s cancel eachother out and -3+2=-1
Last 10+5=15

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