Respuesta :
Answer:
a = -3
Step-by-step explanation:
−40 + 10a = -70
10a = -70 + 40
10a = -30
a = -30/10
a = -3
1.add 40 to -70 (10a=-30)
2. Multiply 10a and -30 by 10
3. The answer is: a=-3
2. Multiply 10a and -30 by 10
3. The answer is: a=-3