Answer:
No
Explanation:
We are given the equation:
3(x-1)=20
We want to know if x can equal 4. Therefore, we can substitute 4 in for x. If 4 is a solution, then both sides of the equation will be the same.
3(x-1)=20
x=4
3(4-1)=20
Solve inside the parentheses first. Subtract 1 from 4.
3(3)=20
Multiply 3 and 3
9=20
9
20
9 is not equal to 20. Therefore, 4 cannot be a solution.