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0.4x+1.2=1.5x-\frac{2}{3}\left(x-7\right)
Use the distributive property to multiply 0.4 by x+3.
0.4x+1.2=1.5x-\frac{2}{3}x-\frac{2}{3}\left(-7\right)
Use the distributive property to multiply -\frac{2}{3} by x-7.
0.4x+1.2=1.5x-\frac{2}{3}x+\frac{-2\left(-7\right)}{3}
Express -\frac{2}{3}\left(-7\right) as a single fraction.
0.4x+1.2=1.5x-\frac{2}{3}x+\frac{14}{3}
Multiply -2 and -7 to get 14.
0.4x+1.2=\frac{5}{6}x+\frac{14}{3}
Combine 1.5x and -\frac{2}{3}x to get \frac{5}{6}x.
0.4x+1.2-\frac{5}{6}x=\frac{14}{3}
Subtract \frac{5}{6}x from both sides.
-\frac{13}{30}x+1.2=\frac{14}{3}
Combine 0.4x and -\frac{5}{6}x to get -\frac{13}{30}x.
-\frac{13}{30}x=\frac{14}{3}-1.2
Subtract 1.2 from both sides.
-\frac{13}{30}x=\frac{14}{3}-\frac{6}{5}
Convert decimal number 1.2 to fraction \frac{12}{10}. Reduce the fraction \frac{12}{10} to lowest terms by extracting and canceling out 2.
-\frac{13}{30}x=\frac{70}{15}-\frac{18}{15}
Least common multiple of 3 and 5 is 15. Convert \frac{14}{3} and \frac{6}{5} to fractions with denominator 15.
-\frac{13}{30}x=\frac{70-18}{15}
Since \frac{70}{15} and \frac{18}{15} have the same denominator, subtract them by subtracting their numerators.
-\frac{13}{30}x=\frac{52}{15}
Subtract 18 from 70 to get 52.
x=\frac{52}{15}\left(-\frac{30}{13}\right)
Multiply both sides by -\frac{30}{13}, the reciprocal of -\frac{13}{30}.
x=\frac{52\left(-30\right)}{15\times 13}
Multiply \frac{52}{15} times -\frac{30}{13} by multiplying numerator times numerator and denominator times denominator.
x=\frac{-1560}{195}
Do the multiplications in the fraction \frac{52\left(-30\right)}{15\times 13}.
x=-8
Divide -1560 by 195 to get -8.