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You are trying to find out the value of 'x' and the value of 'y'. 

This means that you need to be able to take away one equation from the other. 

3x + 2y = 4 - we are going to times this equ...

5x+6y=3 2x-3y=12 6y=3-5x 2x=12+3y 3y=2x-12 Therefore, 6y=2(2x-12)=4x-24 4x-24=3-5x 9x=27 x=3

Given 924 x 438 = 404712, we must consider the changes made to THIS question that leads to 9.24 x 43.8 924 => 9.24: we divide 924 by 100 to get 9.24
438 => 43.8: we divide 438 by 10 to get 43....

This will involve drawing a diagram to aid your answer. Where O is the origin, A is a point on the circle and P is a point on the x-axis. OA is the radius of the circle. Line l crosses through point A and...

Ben: 5 apples and 3 pears costing £3.70, therefore: 5a + 3p = 3.7. Jenny: 6 apples and 6 pears costing £5.40, therefore: 6a + 6p = 5.4. (1) 5a + 3p = 3.7, (2) 6a + 6p = 5.4. Multiply equation (1) by 2: 10...