Question

solve the equation and check your solution by substituting in the equation 3(x+4)=21

Answer 1

3(x+ 4) = 21
3x+12= 21
3x= 21-12
3x=9
x= 9÷3
x= 3
check
3( 3+4)= 21
9+ 12= 21
21=21
Hope this will help you mate