how do you solve by substitution for 3x 3y 9 and 9x 59 y

Solve the Systems of linear equations by Method of Substitution: 2x - 9y = 0 (i) x - 18y = 27 (ii..

The solution is x = -9 and y = -2. Solve 43x + 31y = 241 (i) 31x + 43y = 277 (ii) By adding (i) and (ii), we get 74x + 74y = 518 x + y = 7 (iii) By subtracting (ii) from (i) 12..

Simultaneous Equations - Consider a linear equations in two variables , say, 3x - 2y = 5. It has an infinite number of solutions, some of these are x = 0, Consider a linear equations in two variables , say, 3x - 2y = 5. It has an..

Solve the system by substitution: 3 x + 3 y = 9, 4 x = - 4 y + 8 => No solution or (3, 9) or (2, 0) or (2, 1)..

Solve the system of equations by substitution: 2 x - y = 10, x - z = - 1, and y = - 9 => x = 1 2 , y = -9, z = -3 or x = 1 2 , y = -9, z = 3 2 or ..

) find (i) f(2) (ii) (iii) (iv) x when . (i) [f(2) means find the value of y when x = 2]. (ii) (iii) (i..

Select the correct statement / statements. I. If x = 9, then 5 x = 45 justifies multiplication property. II. 3 x - 24 = 9 can be solved by addition property alone. III. If x = 2 y , then 5 x - 7 = 5 ..

x+3y=6 x=6-3y y=2, x=6-3y =6-3(2) =6-6 x=0 y=0, x=6-3y =6-3(0) =6-0 x=6 y=+3, x=6-3..

The fraction is . Six years hence a man's age will be three times his son's age, and three years ago he was nine times as old as his son. Find their present ages. Let the present age of the man be x years, and the present age of his son be y years. 6 years hence their a..

Solve: 3x - 4y = 20 (i) 5x + 6y = 8 (ii) Multiply (i) by 3 and (ii) by 2: Adding the two, 19x = 76 Substituting x = 4 in (ii), we get 5(4) + 6y = 8 6y = 8 - 20 6y..