Q. Combine like terms to create an equivalent expression.7.4z−5(−1.6z+2.4)
Distribute −5 across terms: Distribute the −5 across the terms inside the parentheses.We need to multiply −5 by each term inside the parentheses −1.6z and +2.4.Calculation: −5×−1.6z=8z and −5×2.4=−12
Rewrite expression with distributed terms: Rewrite the expression with the distributed terms.Replace the terms inside the parentheses with the results from Step 1.Expression: 7.4z+8z−12
Combine like terms: Combine like terms, which are 7.4z and 8z. Add the coefficients of z together. Calculation: 7.4z+8z=15.4z
Write final simplified expression: Write the final simplified expression.Combine the result from Step 3 with the constant term from Step 2.Expression: 15.4z−12
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