Question

solve solve the following equation and verify the result​ s​

Answer 1

Answer:

3a-42=18

Step-by-step explanation:

3a=18+42

3a=60

a=20

ans.=20

Answer 2

Answer:

$1. )\: \: 2(0.35y - 1) + 2.3y = 8 \\ 2 \times 0.35y - 1 + 2.3y = 8 \\ 2 \times 0.35y + 2.3y = 8 + 1 \\ 2 \times 2.65y = 9 \\ 2.65y = \frac{9}{2 } \\ 2.65y = 4.5 \\ y = \frac{4.5}{2.65} \\ y = 1.25$

$2.)2x - 45 = 15 \\ 2x = 15 + 45 \\ 2x = 60 \\ x = \frac{60}{2} \\ x = 30$

$3a - 42 = 18 \\ 3a = 18 + 42 \\ 3a = 50 \\ a = \frac{50}{3} \\ a = 16.66$

I am sorry I solve only 3 sum