Question

if the ratio between 8 and 11 is same as the ratio of 2x-y to x+2y ; find the value of 7x/9y

Answer 1

$(2x - y) \div( x + 2y) = 8 \div 11 \\22x - 11y = 8x + 16y \\ 14x - 27y = 0 \\ 14x = 27y \\ 14x \div 27y = 1 \\ (2 \times 7x) \div (3 \times 9y) = 1 \\ 7x \div 9y = 3 \div 2$

Answer 2

here is your answer...