Answer:
47.5 and 2853.56 m
Step-by-step explanation:
Graph the equation on desmos and use the graph to find the maxima and the roots
Add like terms just like you would anywhere else...
-4x+y= -9 can be turned into
y= -9 + 4x
5x+2y=3 (plug y in)
5x+2(-9+4x)=3
5x-18+8x=3
5x+8x=3+18
13x=21
divide 13 on both sides
x=1.6
The two-digit number you are looking for is 12.
4 x 3 = 12.
6 x 2 = 12.
This fits your criteria.