Math, asked by krrishmalvi, 1 day ago

3x - (a+1) = 20
(a+2)x-10y = 40
Find = a​

Answers

Answered by KillerNaruto
0

Answer:

1.)3x - (a + 1) = 20 \\  =) 3x - a - 1 = 20 \\  =) 3x - a = 21 \\  =) x - a = 7 \\  - a = 7 + x \\ a =  - (7 + x) \\ a =  - 7 - x \\2.) (a + 2)x - 10y = 40 \\(a + 2) x = 40 + 10y \\ a + 2 =  \frac{40 + 10y}{x}  \\ a =  \frac{40 + 10y}{x}  - 2 \\ a =  \frac{40 + 10y - 2x}{x}

Similar questions