Answer
13.75
Work Step by Step
First, we simplify the expression:
$1.2x+2.3x-1.4x-7.6x$
=$3.5x-1.4x-7.6x$
=$2.1x-7.6x$
=$-5.5x$
We evaluate the expression by substituting the value of $x=-2.5$ into the expression,
$-5.5x$
=$-5.5(-2.5)$
=$-\frac{55}{10}\times-\frac{25}{10}$
=$\frac{-55\times-25}{10\times10}$
=$\frac{1375}{100}$
=$13.75$
