For what value of a does (one-seventh) Superscript 3 a + 3 Baseline = 343 Superscript a minus 1?

Step-by-step explanation:

Given

Required

Find a

We start by writing 343 as a factor of 7

From laws of indices;

So;

becomes

Cancel 7 on both sides

Open brackets

Collect like terms

Divide both sides by 6

$25

step-by-step explanation:

25 - 4.50 = 20.5

20.5 / 2 = 10.25

10.25 + 10 = 20.25

20.25 - 12.50 = 7.75

therefore the answer is $25 as shown as the first number.

answer: the answer is simply nothing.

step-by-step explanation: because there is no ending to this question

gimme brainliest > : 3