Can any one figured this out how the answer to this equation us 37/351.
here's the problem?
54x + 18 (-55/78) = -7
Can anyone explain it in step by step? Thanks
2007-11-09 08:14:03 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
here I think you want to solve for x
first step is to multiply 18 times -55/78
which is -12.69
gives the new equation
54x + (-12.69) = -7
second step is to add -12.69 to both sides
this gives
54x = -19.69
third divide both sides by 54
this gives
x = -0.36
2007-11-09 08:22:54 · answer #1 · answered by Harry W 3 · 0⤊ 0⤋
54x + 18(-55/78) = -7
54x + (-990/78) = -7 reduce by dividing (...) by 6
54x + (-165/13) = -7 move across
54x = (165/13) - 7 get common denominator
54x = (165/13) - (91/13)
54x = 74/13
x = (74/13) times 1/54 = 74/702 get common denominator
74/702 is also 37/351 (each divided by 2)
2007-11-09 17:00:31 · answer #2 · answered by SAD 2 · 0⤊ 0⤋
54x - 165/13 = -7
54x = 165/13 - 7 = 74/13
x = 74/13/54 = 37/351
Just have to stay in fractions.
2007-11-09 16:24:42 · answer #3 · answered by norman 7 · 1⤊ 0⤋