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Simplifying 21 = -4 + (5x + 5) Reorder the terms: 21 = -4 + (5 + 5x) Remove parenthesis around (5 + 5x) 21 = -4 + 5 + 5x Combine like terms: -4 + 5 = 1 21 = 1 + 5x Solving 21 = 1 + 5x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5x' to each side of the equation. 21 + -5x = 1 + 5x + -5x Combine like terms: 5x + -5x = 0 21 + -5x = 1 + 0 21 + -5x = 1 Add '-21' to each side of the equation. 21 + -21 + -5x = 1 + -21 Combine like terms: 21 + -21 = 0 0 + -5x = 1 + -21 -5x = 1 + -21 Combine like terms: 1 + -21 = -20 -5x = -20 Divide each side by '-5'. x = 4 Simplifying x = 4
| Log(x+4)-logx=2 | | 9x-x-4x= | | 3x+12+132=180 | | 13+x-x= | | 6b^2-12b+68=5 | | 104+6x=110+4x | | 2x+3x-3x-2x= | | 4y-16+8y=-1 | | -115=-5(7n-5) | | 2x+5x-6x= | | 28-9x+3=34x+5-9x | | 5(6x-6)=-210 | | 7x=105-8x | | 6-3n=12n+9 | | 787-8767*x=134 | | -11+x=-10 | | 6x=60-9x | | 20k+100=20(k+37) | | 12*X-10=150 | | x^2+28x+-5=6 | | (m-2)3=-3 | | 30y+45=152(4y+6) | | 23-87*X=132 | | 23-87*x=123 | | 4(x+5)=6(x+2) | | 3x-49=4 | | -2(-3)-2(-3)= | | .4(x+5)=6(x+2) | | π=3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223172535940812848111745028410270193852110555964462294895493038196442881097566593344612847564823378678316527120190914 | | 3+5x=7+4x | | 0.12=x+0.1+(1-x)0.06 | | 2x+42y=0 |