Question

solve the substitution method
2m+n=8 ; 3m-2b=-2​

Answer 1

Answer:

m = 2 and n = 4

Step-by-step explanation:

$2m+n=8\\=> 2m=8-n\\=>m=\frac{8-n}{2} \\\\3m-2n=-2\\\\=>3(\frac{8-n}{2})-2n=-2\\\\=> \frac{24-3n}{2} -2n=-2\\\\=> \frac{24-3n-4n}{2} =-2\\\\=> 24-3n-4n=-2(2)\\\\=> 24-7n=-4\\\\=> 7n=24+4\\\\=> 7n=28\\\\=> n =\frac{28}{7} \\\\=> n=4\\\\m =\frac{8-n}{2} \\\\=> m=\frac{8-4}{2}\\\\=> m=\frac{4}{2}\\\\=>m=2$

Answer 2

Answer:

2m+n=8

2m=8-n

m=(8-n)/2

3m-2b=2

3m=2+2b

m= (2+2b)/3