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 ▸Sarah plans to paint a rectangular wall of dimensions 8.7m x 2.3m. A tin of paint costs £16.10 and covers 6 metres squared. Sarah has a budget of £56, can she afford to paint the wall? Explain your reasoning.
Solve 3x² + 6x – 2 = 0. Give your solutions correct to 2 decimal places [calculator paper]
Expand and simplify (x − 4)(2x + 3y)^2
How do I find the equation of a line between two points?