divide 33 photos into two groups so the ratios 4 to 7
1.
2x + y = 20 (multiply this equation by 5 in order to get rid of y by addition of both equations)
6x - 5y = 12
2.
10x + 5y = 100
6x - 5y = 12
(add both equations to get the below equation)
16x = 112
3. Do simple math:
x = 112/16
x = 7
4. plug in the x (7) into the first equation
2x + y =20
2*7 + y = 20
14 + y = 20
y = 6
(x, y)
answer: (7,6)
Answer:
3x-y= -8
Step-by-step explanation:
i believe this answer is correct
Answer: y = 2
Step-by-step explanation:
Answer:
150
Step-by-step explanation:
15 times 8 = 120
14-8 = 6
6 times 5 = 30
150