3x + 4x = 847x = 84divide both sides by 7x = 12
7x2 -4x -5x2 +2x = 2x2 -2x
11x - 21 = 7x + 3 4x = 24x = 6
It equals 53X- a number is squared when it is multiplied by itself, so 7X by 7X = 49X. 2X by 2X =4X, so 49X + 4X is 53X.
4x
2x+7x-10=4x+3-2x 9x-10=2x+3 7x=13 x=13/7ans
8y-7x
-4x-1-3x-4+5 = -7x-1-2x+1+6 -7x = -9x+6 2x = 6 x = 3
7x + 6 - 4x = 5 + 2x + 7 subtract 6 from both sides and combine the 5 and 7 on the right: 7x - 4x = 2x + 6 subtract 2x from both sides and combine the 7x and -4x on the left: x = 6
4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
13x
4x+5=7x-8 the ansewr is 3.25
3x + 4x = 847x = 84divide both sides by 7x = 12
7x2 -4x -5x2 +2x = 2x2 -2x
No, that's not correct.-3x + 4x = x
-3x=-21+4x-3x-4x=-21+4x-4x-7x=-217x=217x/7=21/7x=3
Presumably this is an equation in which the value of x is to be found. 7x+8 = 4x-10 7x-4x = -10-8 3x = -18 x = -6