7x-4=5x+15 solve the following equation

To dilute a cleaning product for use, 35 cl of concentrate needs to be added to 4 l of water. Heidi uses 12 l of water to make the cleaning liquid. How much cleaning liquid has she made, in l

Four times the larger number of two numbers is equal to seven times the smaller. The sum of the numbers is 22. Find the numbers

Mary has postcards and stamps. The ratio of the number of postcards to the number of stamps she has is 2:9. If Mary has 36 stamps, how many postcards does Mary have?

Drama be the best thing yee know

Solve for x: 13x - 7 - 10x = 2

Is 1.32 a rational number or integer

What are the solutions to 3|x|=15

Write 51% as a fraction in simplest form

How do you write y = 1/4x + 10 in standard form using integers

What is the 25th term of the following sequence? 17, 24, 31, 38 ...