To solve the equation 7x = 15 + 6 using substitution, we need to isolate one of the variables, either x or the expression on the right side of the equation.
Step 1: Start with the given equation: 7x = 15 + 6
Step 2: Simplify the right side of the equation: 7x = 21
Step 3: Divide both sides of the equation by 7 to isolate x:
(7x)/7 = 21/7
x = 3
Therefore, the solution to the equation 7x = 15 + 6 is x = 3.
solve the equation 7x equals 15 + 6 using substitution
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