What is the justification for step 3 in the solution process? 0.8a − 0.1a = a − 2.5 Step 1: 0.7a = a − 2.5 Step 2: -0.3a = -2.5 Step 3: a = 8.3

y=mx+

£56

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10