3X+70-7*18=0
3X+70-126=0
3X-56=0
3X=56
x=56/3 or 18.6667
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The answer is 455. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
3n-5=13 +5 +5 3n=18 /3 /3 n=6
To solve x + x + x + x, set the problem up as multiplication like this 4x = 128. Divide both sides of the problem by 4. You will get x = 32. To check your work, substitute 32 for the x and do the math. 4 x 32 = ?. If the answer is 128, the answer is correct.
The easiest way to solve an algebra problem is to work out the problem.
0.0093