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Simplifying 21x + -9 = 4(5x + 3) + -3 Reorder the terms: -9 + 21x = 4(5x + 3) + -3 Reorder the terms: -9 + 21x = 4(3 + 5x) + -3 -9 + 21x = (3 * 4 + 5x * 4) + -3 -9 + 21x = (12 + 20x) + -3 Reorder the terms: -9 + 21x = 12 + -3 + 20x Combine like terms: 12 + -3 = 9 -9 + 21x = 9 + 20x Solving -9 + 21x = 9 + 20x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20x' to each side of the equation. -9 + 21x + -20x = 9 + 20x + -20x Combine like terms: 21x + -20x = 1x -9 + 1x = 9 + 20x + -20x Combine like terms: 20x + -20x = 0 -9 + 1x = 9 + 0 -9 + 1x = 9 Add '9' to each side of the equation. -9 + 9 + 1x = 9 + 9 Combine like terms: -9 + 9 = 0 0 + 1x = 9 + 9 1x = 9 + 9 Combine like terms: 9 + 9 = 18 1x = 18 Divide each side by '1'. x = 18 Simplifying x = 18
| -8+6=2g-4 | | -2x-7y+13=0 | | 7x+(3x-5)=(8x+5) | | 11-3(2x-7)=2 | | 2x^2y-9xy^2= | | -27+(-13)= | | 10s+2=100 | | 4k+1=3k-9 | | p+20=42 | | 12+7x=40 | | 7x+7-4x= | | 12+7=40 | | 8j+5=10j-3 | | LN(y)=3t+5 | | 8n-90=72 | | 14+3x-7= | | F(5x)=5x^2-4(5x)+6 | | 4a^2+7a-2=0 | | 4(-8+4m)-6m=102 | | -8x+7(x+-2)=-14 | | x/(1,71)^2=22 | | -(9x-4)-(5x-5)+6=-7(x-1)-(10x+7)+3 | | 5h-7=2h+5 | | a+a+a-b+b+b+a-b= | | (4x+5)-(4+3x)=4 | | 3x+12y=-8 | | 4p-2+7p=20 | | 5-3(2x-1)=3x-1 | | 4-c=.33 | | 2(x-3)+x=3(x-3)+3 | | 2.6h+16=1.6h+22 | | 10(r+1)=100 |