Solve the simultaneous equations for x and y: 2x - 3y + 4 = 0 , x - 2y + 1 = 0.

Simultaneous equations can be solved either by substitution or elimination. Solving this by elimination:2x - 3y + 4 = 0 (1)x - 2y + 1 = 0 (2)To eliminate x, we can multiply both sides of the second equation by 2:2x - 4y + 2 = 0 (3)By subtracting (1) from (3) we find that y = -2. Substituting this into (2) gives x = -1 + 2(-2) = -5.

BR

Related Maths GCSE answers

All answers ▸

find the values of x when 3x^2 - 6x - 9


Fully simplify (8a^2b * ab^4)/(2a^3b^2)


A line has equation y=3x+4, state the gradient and the y-intercept


What is (2/3)^(-1/3)?