Question

metodo de sustitucion 5m + 4p= 120 12m +2p=136

Answer 1

Explicación paso a paso:

5m + 4p= 120

12m +2p=136

5m=120-4p

m=(120-4p)/5

12m+2p=136

12( (120-4p)/5 ) +2p=136

12×(120-4p)/5+2p=136

(1440-48p)/5+10p/5=136

(1440-48p+10p)/5=136

1440-38p=136×5

1440-38p=680

1440-680=38p

760=38p

760/38=p

20=p

5m + 4p= 120

5m+4(20)=120

5m+80=120

5m=120-80

5m=40

m=40/5

m=8