Question

If 2x + 4 =12, then 3x is equal to​

Answer 1

Answer:

3x-4=12

3x=8

x=8/3

now,

x=8/3

Step 1{multiplying x on both sides}

x²=8x/3

Step 2{subtracting (8/3)² from both sides}

x²-(8/3)²=8x/3–(8/3)²

Step 3{on LHS using identity:a²-b²=[a+b] [a-b] ;on RHS taking 8/3 common}

[x+8/3][x-8/3]=[8/3][x-8/3] i hope it's help you

Answer 2

Answer:

3x=12 Ans

Step-by-step explanation:

2x+4=12

2x=8

x=4

Therefore, 3x is 3×4=12