exam Maths Puzzle Numerical Ability

Can someone show me how to solve by the substitution method. Thanks!

5X + 2y = -1
2X - y = -13

Read Solution (Total 0)

exam Other Question

3b+2a=2 and -2b+a=8 A newspaper has 12,240,000 subscribers this year. The number of subscribers is down 8% from last year. How many subscribers were there last year? Only info is Form A,Chapter 1-6 Cuulative Assessment