Question

Help with mathematics

Answer 1

x=4

y=3

Explanation:

-0.8x+1.3y=0.7,3.2x−2.5y=5.3

-0.8x+1.3y=0.7

x=−1.25(−1.3y+0.7)

x=1.625y−0.875

3.2(1.625y−0.875)−2.5y=5.3

5.2y−2.8−2.5y=5.3

2.7y−2.8=5.3

2.7y=8.1

y=3

x=1.625×3−0.875

x= 39-7

8

x=4