Question

solve by substitution method
0.08x-0.01y=4.4
0.26x+0.14y=21.2

Answer 1

To get rid of the decimals multiply each equation by 100 to get the equations
8x - y = 440
26x + 14y = 2120

solving the first equation for y give
y=8x - 440
substituting into the second equation give
26x + 14(8x - 440) = 2120
26x + 112x - 6160 = 2120
138x = 8280
x 8280/138 = 60

Answer 2

typo. i meant x = 8280/138 = 60. then substitute back into first equation to get y = 8*60-440 = 480-440 = 40