Question

Выразив переменную у через х ,найдите три каких либо решения....а)3х - у=10б)6х +2у=7

Answer 1

А) у = 3х - 10. У = -10( при х=0), -7 (при 1), -4 (при 2)
Б) у = 3.5 - 3х. 3,5; 0,5; -2,5

Answer 2

Task: Finding Solutions for Equations

To find the solutions for the given equations, let's express variable u in terms of x and then substitute it into the equations.

a) 3x - u = 10: To express u in terms of x, we can rearrange the equation as follows: u = 3x - 10

b) 6x + 2u = 7: Substitute the expression for u from equation (a) into equation (b): 6x + 2(3x - 10) = 7 Simplify the equation: 6x + 6x - 20 = 7 Combine like terms: 12x - 20 = 7 Add 20 to both sides: 12x = 27 Divide both sides by 12: x = 27/12 Simplify the fraction: x = 9/4

Now, substitute the value of x back into equation (a) to find the value of u: u = 3(9/4) - 10 Simplify the expression: u = 27/4 - 40/4 u = -13/4

Therefore, the solutions for the given equations are: a) x = 9/4, u = -13/4

Please let me know if you need any further assistance!