evaluating Algerabraic expressions.

Question:

1. x+3 for x=7
2. x²+×-3 for x=2
3. y²+x³+7 for y=w, x=1
4. 5-ײ for x= -2
5. 3ײ÷12+y for ×=4, y = -7
6. 2×y - 3× for x =2 and y = -1
7. 5ײ+3×-4 for x=e
8. 5abc for a-1, b =2, c=3
9. 9z - 6w - 5 for z=0 and w = -1
10. ×+1 for x=2
zx-1
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