Show me how to work the equation 30-f+8f=30
2 answers:
Answer:
f=0
Step-by-step explanation:
30-f+8f=30
30+7f=30 (combine like terms, in this case -f stands for -1 so (-1+8=7) )
7f=0 (divide by 7)
f=0 (any number divided by 0 is 0)
30-f+8f=30
30+7f=30
Move +30 to the right side. Sign changes from +30 to -30.
30-30+7f=30-30
7f=0
Divde by 7
7f/7=0/7
Cross out 7 and 7, divide by 7. Becomes 1*1*f=f
f=0
Answer: f=0
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