(5/7)x + 1/7 = 3
Subtract 1/7 from each side
(5/7)x = 2 6/7
Combine into one mixed number on the right hand side
(5/7)x = 20/7 ---> 2 6/7 becomes 7*2 + 6
Multiply both sides by (7/5) to clear the fraction in front of x
x = (20/7) * (7/5) = 140/35 = 4
So x = 4
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67 plus 3 equals 70.
Yes, -8 plus plus 3 equals -5. The "plus plus" is equivalent to a positive sign, so -8 plus (+3) equals -5.
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