Question

.
Solve in substitution method.
0.4x +
0.3y = 2.3 and 2.5x + 2y = -5​

Answer 1

Answer:

$0.4x \: + 0.3y = 2.3 \\ 2.5x + 2y \: = - 5 \\ from \: second \: equation \\ y = - 5 - 2.5x \div 2 \\ substitute \: value \: of \: y \: in \: first \: equation \:$