(1) four times of a number minus the sum of 2.8 and 5.4, the difference is 23. What is the number? (2) The sum of 4 times of a number plus 0.9 times 3 is 6.7. Find the number. (3) one number is half larger than 7.5, and the other is 0.7 smaller than nine tenths. What is the difference between the two numbers?

(1) four times of a number minus the sum of 2.8 and 5.4, the difference is 23. What is the number? (2) The sum of 4 times of a number plus 0.9 times 3 is 6.7. Find the number. (3) one number is half larger than 7.5, and the other is 0.7 smaller than nine tenths. What is the difference between the two numbers?

4X - (2.8 + 5.4) = 23, x = 7.8
4X + 0.9 * 3 = 6.7, the solution is x = 1
The first number & nbsp; = & nbsp; 7.5 + 1 / 2 & nbsp; = 8
The second number & nbsp; = & nbsp; 9 / 10 & nbsp; - & nbsp; 0.7 & nbsp; = & nbsp; 0.2

1. The number a is 26.8, 2.6 less than three times the number B. what is the product of the two numbers?

Let B be x, then 3x-2.6 = 26.8
3X=26.8+2.6=29.4
X=9.8
26.8*9.8=26.8*(10-0.2)=268-5.36=262.64

The product of a and B is 7.26. If a is increased by 0.5, then the product is 8.36. What is the sum of a and B?
emergency

The number of B is (8.36-7.26) / 0.5 = 2.2
The number of a was 7.26 / 2.2 = 3.3
The sum is 2.2 + 3.3 = 5.5

4 times of a number plus the product of 8 and 3.2. The sum is 30. Find the number

Let this number be X
4x+8*3.2=30
4x+25.6=30
4x=4.4
x=1.1
This number is 1.1