Final answer:
To find the value of the variable b in the equation -5=b-2.3b, simplify the equation by combining like terms and isolate the variable by performing inverse operations.
Step-by-step explanation:
To find the value of the variable in the equation -5=b-2.3b, we can simplify the equation by combining like terms. First, distribute the negative sign across the parentheses to get -5 = b - (2.3 * b). Simplify further by subtracting b from both sides of the equation, which gives -5 - b = -2.3b. Rearrange the equation by adding 2.3b to both sides, resulting in -5 + 2.3b = 0. Now, add 5 to both sides to isolate the variable. This yields 2.3b = 5. Finally, divide both sides of the equation by 2.3 to find the value of b. The numeral answer would be 5/2.3.