Solve algebraically: 6a + b = 16 ..... 5a - 2b = 19
first equation: 6a + b = 16 second equation: 5a - 2b = 19 from 2 times first equation + second equation 17a = 51 meaning a = 3
.... from the first equation 6(3) + b = 16 therefore b = - 2
BC
Related Maths GCSE answers
All answers ▸Fully expand (2x+4)(4x-3).
Solve x² + x -12
Gavin, Harry and Isabel each earn the same salary. Gavin saves 28% of his salary. Harry spends 3/4 of his salary and saves the rest. The amount Isabel saves:The amount she spends=3:7. Who saves the most?
At what points does the line y = x +1 intersect the circle x^2 + y^2 + 18x + 20y + 81 = 0.