Can any one tell the all answers of this give photo pls quickly!!!
Answers
Answer:
1) 2y+9=4
2y =4-9
2y= -5
y=-5/2
Step-by-step explanation:
1) 2y+9=4 solve 15/4 - 7x = 9
2y =4-9
2y= -5
y=-5/2
2) 3/7 + x = 15/7
solve
1. rearrange term
3/7 + x =15/7
x + 3/7 = 15/7
2. subtract 3/7 from both sides of the equation
x + 3/7 = 15 /7
x + 3/7 - 3/7 = 15/7 -3/7
3. simplify
subtract the number x = 12/7
solution
x = 12/7
3) Given
15/4 -7x = 9
Find out
We need to find the value of x
Solution
15/4 -7x = 9
On rearranging the terms we get,
7x – 15/4 = 9
Taking 15/4 into RHS and solving we get,
7x = 15-36/4
7x = -21/4
x = -21/4*1/7
= -3/4
Therefore the answer of x = -3/4
4)a) 15+7=x
x=22
hence.,x=22
b) 8x + 6 = 2 (x - 1 ) + 7
-6+2 = 7x -8x
-4 = -1x
x = -1/4
6)
cost of a pencil = x
cost of pen = x+3
10x + 5(x+3) = 30
10x + 5x + 15 = 30
15x = 15
x = 1
cost of pencil = 1
cost of pen = 1+3 or 4
7) Let the three consecutive multiples of 11 are 11x, 11x+11 and 11x+22
Their sum is 363
11x+11x+11+11x+22=363
33x+33=363
33x=363−33
33x=330
x=
33
330
x=10
First multiple =11x=11×10=110
Second multiple =11x+11=110+11=121
Third multiple =11x+22=110+22=132
9)
we have to find the numbers .
solution:-
let. the first multiple of 9 = 9x
because these are consecutive .
then
2nd number = 9(x+1)
3rd number = 9(x+2)
Now,
According to question:
9x +9(x+1) + 9(x+2) = 999
=> 27x +27 = 999
=> 27x = 999-27 = 972
=> x = 36
hence;
1st number multiple of 9 = 9× 36 = 324
2nd number multiple of 9 = 9×37 = 333
3rd number multiple of 9 =9× 38 = 342
hey bro i didn't get the answer of question no : 5,8,10,11