Question

( 480 - а ) : 4, а* 3 -250, ( а - 130 ) * 2, 400 - а : 8, а + 800 : 10, ( а + 700 ) : 10

Answer 1

1) 120-0,25а
2)3а-250
3) 2,400а-312-а/8= 261
4)0,1а-80
5)0,1а+70

Answer 2

I can help you with finding the values of the expressions, if a = 240. Here are the steps to solve them:

- (480 - a) : 4 * Subtract a from 480 to get 480 - a = 480 - 240 = 240 * Divide the result by 4 to get 240 : 4 = 60 * The answer is 60 - a * 3 - 250 * Multiply a by 3 to get a * 3 = 240 * 3 = 720 * Subtract 250 from the result to get 720 - 250 = 470 * The answer is 470 - (a - 130) * 2 * Subtract 130 from a to get a - 130 = 240 - 130 = 110 * Multiply the result by 2 to get 110 * 2 = 220 * The answer is 220 - 400 - a : 8 * Divide a by 8 to get a : 8 = 240 : 8 = 30 * Subtract the result from 400 to get 400 - 30 = 370 * The answer is 370 - a + 800 : 10 * Divide 800 by 10 to get 800 : 10 = 80 * Add the result to a to get a + 80 = 240 + 80 = 320 * The answer is 320 - (a + 700) : 10 * Add 700 to a to get a + 700 = 240 + 700 = 940 * Divide the result by 10 to get 940 : 10 = 94 * The answer is 94

I hope this helps you understand how to solve these expressions. If you want to learn more about algebra, you can check out some of the web search results I found for you . Have a nice day!