Answer:
Step-by-step explanation:
3(a+3)-6=21
<=>3a+9-6=21
<=>3a+3=21
<=>3a=18
<=>a=6
Answer:5625 yards
Step-by-step explanation:
2/5=6/15
1/3=5/15
6/15+5/15=11/15
(15/15)-(11/15)=4/15
1500/4=375
375×15=5625
The cost of one slice of mushroom pizza is $2.00 dollars. This is solved by subtracting the equations:
X = cheese pizza
Y = mushroom pizza
(3X + 4Y = 12.50)
- (3X + 2Y = 8.50)
______________
2Y = 4.00
Y=2 or a slice of mushroom pizza is $2.00.
I can't explain it with words so here's the equation, hopefully you understand:
875/125=7
