Solve simultaneously: 2x + y = 18 and x - y = 6
Make both equal to y:y = 18 - 2xy = x - 6Make both equal to each other:18 - 2x = x - 63x = 24x = 8Substitute x into one of the original equations:x - y = 68 - y = 6y = 2So x = 8 and y = 2
TD
Related Maths GCSE answers
All answers ▸A is (2, 12) and B is (8, 2) Calculate the midpoint of AB.
Solve these two simultaneous equations.
I set up a tent (assume it’s a regular triangular prism) of length 2.2m. The triangular face of the tent is an isosceles triangle. The two identical sides are both 1.4m long and have an angle of 34degrees between them. Work out the volume of the tent -3sf
X=4a+3b, If a is a two digit cube number and b is a two digit square number then what is the lowest possible value for X?