exam Maths Puzzle Numerical Ability

15. 17+2n=21+2n 19. 18-3.8x=7.36-1.9x

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exam Other Question

inequaliyt 7<4x+3<21, what is the interval Solve the following systems by using either addition or substitution. If a unique solution does not exist, state whether the system is dependent or inconsistent.

10x + 2y = 7
y