The prices of two radios are in the ratio x : y when the prices are both increased by £20 , the ratio becomes 5 : 2 when the prices are bith reduced by £5 , the ratio becomes 5:1 express the ratio x : y in its lowest terms

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?