Use substitution
2x + 3(12 - 5x) = 11
Distributive property
2x + 36 - 15x = 11
Combine like terms
-13x + 36 = 11
Subtract 36
-13x = -25
x = 25/13
y = 12 - 5(25/13)
y = 31/13
Solution: x = 25/13, y = 31/13
Anything times itself will always be the same, so 10,000 is your answer.
What they want you to do is subsitute 3 for d
write 3 for everywhere you see d and remember that 3d means 3 times d and -d means -1 times d
(d+3d)-(-d+2)
d=3
(3+3(3))-(-3+2)
(3+9)-(2-3)
(12)-(-1)
12+1
13
answer is 13
Answer:
4:11
Step-by-step explanation:
let's say there 15 students, 10 of them study a language. Of the 10, 4 (the 2/5) study french, so of the 15 students 4 study french, making it 4:11.
