brians work is shown. where did he make a mistake? choose the first incorrect step in brians work.\nstep 1…

brians work is shown. where did he make a mistake? choose the first incorrect step in brians work.\nstep 1, because he should not have subtracted 6 to isolate 3k\nstep 2, because 15 - 6 ≠ 9\nstep 3, because he should not have divided by 3 to isolate k\nstep 4, because \\frac{3k}{3} ≠ k\nbrians work\n3k - 6 = 15\n- 6 - 6\n3k = 9\n\\frac{3k}{3} = \\frac{9}{3}\nk = 3

brians work is shown. where did he make a mistake? choose the first incorrect step in brians work.\nstep 1, because he should not have subtracted 6 to isolate 3k\nstep 2, because 15 - 6 ≠ 9\nstep 3, because he should not have divided by 3 to isolate k\nstep 4, because \\frac{3k}{3} ≠ k\nbrians work\n3k - 6 = 15\n- 6 - 6\n3k = 9\n\\frac{3k}{3} = \\frac{9}{3}\nk = 3

Answer

Explanation:

Step1: Solve the equation correctly

Given the equation (3k - 6=15). According to the property of equality, to isolate (3k), we should add (6) to both sides of the equation. The correct operation is (3k-6 + 6=15 + 6), which simplifies to (3k=21). But Brian subtracted (6) in Step 1.

Answer:

Step 1, because he should not have subtracted 6 to isolate (3k)