Question

5(a+b)+(2a-b)=20 and b=2

Answer 1

Step-by-step explanation:

5( a+ b) + (2a -b )

5(a+ 2) + (2a -2)

5a + 10 + 2a - 2 [ b = 2 ]

5a + 2a + 10 - 2

7a + 8 = 0

7a = -8

a = -$\frac{8}{7}$

Hope it helps you.