Respuesta :
Answer:
x=7
Step-by-step explanation:
8x-(6x-7)=21
8x-6x+7=21
2x+7=21
2x=21-7
2x=14
x=14/2
x=7
8*7-(6*7-7)
56-(42-7)
56-35
21
Answer:
x=7
Step-by-step explanation:
8x-(6x-7)=21
8x-6x+7=21
2x+7=21
2x=21-7
2x=14
x=14/2
x=7
8*7-(6*7-7)
56-(42-7)
56-35
21
