To find an expression equivalent to \(t + 4 + 3 - 2.2t\), we need to combine like terms. Like terms are terms that contain the same variable raised to the same power. In this case, the like terms are those with \(t\) and the constant numbers.
Step 1: Combine the terms with \(t\).
We have \(t\) and \(-2.2t\). Adding these together, we get: \(1t - 2.2t\).
Step 2: Perform the operation with the coefficients of \(t\).
\(1t - 2.2t = (1 - 2.2)t = -1.2t\).
Step 3: Combine the constant terms.
We also have constant terms, which are \(4\) and \(3\). Adding these together, we get: \(4 + 3\).
Step 4: Perform the operation with the constant terms.
\(4 + 3 = 7\).
Step 5: Write down the simplified expression.
Combining the results from Step 2 and Step 4, we get: \(-1.2t + 7\).
Thus, the expression equivalent to \(t + 4 + 3 - 2.2t\) is \(-1.2t + 7\).