Question

(2a +15) +(3a+5) +(a) +(70)=360​

Answer 1

Answer:

45

Step-by-step explanation:

2a+15+3a+5+a+70=360

6a+90=360

6a=360-90

6a=270

a=270/6

a = 45

Answer 2

$(2a +15) +(3a+5) +(a) \\ +(70) =360 \\ \\ 2a + 3a + a + 70 + 5 + 15 \\ = 360 \\ \\ 6a + 70 + 20 = 360 \\ \\ 6a + 90 = 360 \\ \\ 6a = 360 - 90 \\ \\ 6a = 270 \\ \\ a = \frac{270}{6} \\ \\ a = 45$