Respuesta :

Answer:

Step-by-step explanation:

3x+7y-2x+3y+7

group like terms

3x-2x   +7y+3y   +7

x+10y+7

quarshjohn

Answer:

grouping of line terms

3x+2x_7y+3y+7

Step-by-step explanation:

5x_10y+7

5x=10y

x=2y+7=9