5x-4x+3=7
just adding steps
5x-4x+3=7
you put numbers to getter but change sign
5x-4x=7-3
5x-4x=4
then it is clear
5(4)-4(4)=7
20-16=7
so as he said x=4
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5x - 4x = 13 - 3 ie x = 10
4x - 3 - 5x + 7 = 6 4x - 5x = 3 - 7 + 6 -1x = 2 x = -2
5x + 3 - 4 + 4x = 9x -1
Then x = 6 Therefore; 5x + 3 = 33 First you have to solve the value of X: 8X + 5X + 2X +4X = 114; OR 19x = 114. When you divide both sides of the equation by 19 to solve for X, you find that X = 6. Ergo, 5X + 3 = 30 + 3 = 33; hence, 5X + 3 = 33.
3x-8+5x+39+4x+51 = x(3+5+4) + -8 + 39 + 51 = 12x +82