Question

toThe three steps shown below were used to find an expression equivalent(15% - 30y) + 10xStep 1: _?Step 2: 16x - 12yStep 3: 4(4x - 3y)Which expression could be used as Step 1?A }(25% - 30Y)B6x - 12y + 10%С6x - 30y + 10xD15(x - 2y + 10xОАBС

Answer 1

the expression is

$\frac{2}{5}\mleft(15x-30y\mright)+10x$

then step 1 is multiply 2/5 by the terms of the parenthesis:

$\begin{gathered} \frac{2}{5}\times15x-\frac{2}{5}\times30y+10x \\ 6x-12x+10x \end{gathered}$

answer: B