Respuesta :
Answer:
burger =$3.99
pan pizza =$6.49
Step-by-step explanation:
3p+6b=43.41⇒eqn 1
2p+7b=40.91⇒eqn 2
eqn 1 * 2
6p+12b=86.82⇒eqn 3
eqn 2 * 3
6p+21b=122.73⇒eqn 4
eqn 4- eqn 3
9b=35.91
b=3.99
sub b=3.99 in eqn 1
3p=43.41-23.94
p=19.47/3
p=6.49
Let p be the cost of a pizza, and b the cost of a burger.
3p + 6b = 43.41
2p + 7b = 40.91
Take twice the first and subtract from three times the second.
9b = 35.91
b = 3.99
Substitute b back in either equation, to get p = 6.49.
3p + 6b = 43.41
2p + 7b = 40.91
Take twice the first and subtract from three times the second.
9b = 35.91
b = 3.99
Substitute b back in either equation, to get p = 6.49.