exam Maths Puzzle Numerical Ability

solve and graph the solution:
57 -4t is greater than or equal to 13

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exam Other Question

Solve the Equation. (my homework tonight)

1. 7/3 = -7
2. 0 = 18/7t
3. 42b = 7
4. 1/9y = 12
5. -6/7x = 2 1/8
6. -5a = - !30!

If somone could please Instant message Two students have 920$ altogether. How much does each have if 5/7 of the money of the first one is equal to 3/5 of the money of the second student?

Please help !!