Solve.
-$$0.4 ( 5 x + 15 ) = 2.7 - ( x + 3 )$$
A) 11
B) $\frac { 11 } { 30 }$
C) $- \frac { 21 } { 10 }$
D) $- \frac { 40 } { 7 }$

Question

Quizplus · Accepted Answer

First, distribute 0.4 on the left side: $0.4 \times 5x + 0.4 \times 15 = 2x + 6$. The equation becomes $2x + 6 = 2.7 - x - 3$. Simplify the right side: $2.7 - 3 = -0.3$, so $2x + 6 = -0.3 - x$. Add x to both sides: $3x + 6 = -0.3$. Subtract 6 from both sides: $3x = -6.3$. Divide by 3: $x = -\frac{21}{10}$.

Solve - 0.4(5x+15)=2.7−(x+3)0.4 ( 5 x + 15 ) = 2.7 - ( x + 3 )0.4(5x+15)=2.7−(x+3)

Solve
- $0.4 ( 5 x + 15 ) = 2.7 - ( x + 3 )$