Question

3(7-2r)=21r-6 how to solve step by step

Answer 1

r = 1

Explanation:

first you have to expand the brackets.

3 x 7 = 21

3 x -2r = -6r

the equation is now 21-6r = 21r-6

now you simplify it so get the answer r = 1

Answer 2

Nobody understands maths and if you do you were sent from heaven