3x-y+7/11+2=10 2y+x+11/7=10
Answers
Answer:
x = 1.60
y = 2.56
Step-by-step explanation:
These are simultaneous equations.
We rewrite the equations below :
3x - y + 7/11 + 2 = 10
We multiply through by 11 to get :
33x - 11y + 7 + 22 = 110
33x - 11y = 110 - 7 - 22
33x - 11y = 81
33x - 11y = 81……………1)
2y + x + 11/7 = 10
Multiply through by 7:
14y + 7x + 11 = 70
14y + 7x = 70 - 11
7x + 14y = 59…………………2)
We solve 1 and 2 simultaneously as follows:
33x - 11y = 81
7x + 14y = 59
We multiply equation 1 by 7 and equation 2 by 33 to get.
231x - 77y = 567
231x + 462y = 1947
Subtract equation 1 from 2:
539y = 1380
y = 2.56
We substitute this in equation 1 to get x as follows:
33x - 11 × 2.56 = 81
33x = 81 - 28.16
33x = 52.84
x = 52.84/33
x = 1.60
These are approximate values of x and y.
Answer:
x = 3, y = 4
Step-by-step explanation:
Given 3 x - y + 7 / 11 + 2 = 10 and 2 y + x + 11 / 7 = 10
After simplifying we get
33 x – y – 7 + 22 = 110
33 x – y + 15 = 110
33 x – y = 95---------------(1)
Second equation will be
14 y + x + 11 = 70
X + 14 y = 59------------(2)
Multiplying second equation by 33 we get
33 x + 462 y = 1947 -----------(3)
By solving 1 and 3 we get
33 x – y = 95
33 x + 462 y = 1947
-----------------------------
- 463 y = - 1852
Y = 4
33 x – y = 95
33 x – 4 = 95
33 x = 99
X = 3