Answer:
1) 42xy-14z
2) 10w + 15- 6w - 12 = 4w + 3
3) 4f^2+2fg-6f
Explanation:
Hope this helps!
a.7(6xy-2z)
=7*6xy-7*2z
=42xy-14z
b.5(2w+3)-6(w+2)
=5*2w+5*3-6*w-6*2
=10w+15-6w-12
=4w+3
c.2f(2f+g-3)
=2f*2f+2f*g-2f*3
=4f^2+2fg-6f
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