Question

15x+1y= 62,30x-4y=112
solve by substitution method

Answer 1

Answer:

$15x + 1y = 62 \\ 30x - 4y = 112 \\ from \\ \: equation \: first \\ 15x + 1y = 62 \\ 15x =( 62 - 1y )\\ x = (62 - 1y )\div 15 \\ from \: equation \: ll \\ 30x - 4y = 112 \\ 30x = 112 + 4y \\ x = (112 + 4y) \div 30 \\ put \: x = (112 + 4y) \div 30 \: in \: equation \: first \: we \: get \: y \: similarly \: put \: y \: value \: in \: equation \: second \: we \: get \: value \: of \: x$