Solve the two simultaneous equations y+5x=30 and 6y=-x+64
The easiest way to solve these equations is by substitution. Rearrange the 6y=-x+64 equation into the form of x=64-6y. Replace x in the other equation with x=64-6y to produce y+5(64-6y)=30. Multiply out the brackets and rearrange to produce -29y=-290 so y=10. Substitute y=10 into the equation x=64-6y to get x=64-60 so x=4.
HW
Related Maths GCSE answers
All answers ▸On a graph, the lines with the equations y=x^2+5x+4 and y=-3x-8 meet at two distinct points. Find the coordinates of these meeting points.
John ran a 450m race (2sf) in a time of 62 seconds (nearest second). Calculate the difference between his maximum and minimum average speed. (3sf)
Factorise a^2 - 5a – 14.
Solve x^2 +11x +30 = 0