Question

0.3X+0.2=0.8
0.2X+0.3Y=0.2

BY SUBSTITUTION​

Answer 1

Step-by-step explanation:

first, we need to simplify the equation.

Here if we multiply the equations with 10, we can get a simplified equation.

now, to solve the equation, we need to eliminate x or y value. so,

(iii) x 3 - (iv) x 2 will eliminate y. then we get the value of x. Then we put the value of x in equation (iv). calculating, we get the value of y.

we need to focus on the simplification of the equations first.