The expression ( 7x ) represents seven times a variable ( x ). To find its value, you would need to know the specific value of ( x ). For example, if ( x = 2 ), then ( 7x = 14 ). Without a specific value for ( x ), ( 7x ) remains an algebraic expression.
None. 7x - 1 is not equal to 7x - 7.
7x-2
7x2
8x=7x-7 x=-7
63
12x - 4 = 7x - 21 12x -7x = -21 + 4 5x = -17 x = -3.4
7x+8-x-7 6x+1
x=(-9/7) 7x+12=3 7x=(-9) x=(-9/7)
It is equal to 21x You can not find x.
Let the number be x: 7x-6 = -20 7x = -20+6 7x = -14 x = -2
hujkImproved anwser:2x+6 = 7x-42x-7x = -4-6-5x = -10x = 2
7x = 2 = 51 is not a valid equality. 2 cannot be equal to 51.