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Simplifying 7x + (x + 20) = 45 Reorder the terms: 7x + (20 + x) = 45 Remove parenthesis around (20 + x) 7x + 20 + x = 45 Reorder the terms: 20 + 7x + x = 45 Combine like terms: 7x + x = 8x 20 + 8x = 45 Solving 20 + 8x = 45 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + 8x = 45 + -20 Combine like terms: 20 + -20 = 0 0 + 8x = 45 + -20 8x = 45 + -20 Combine like terms: 45 + -20 = 25 8x = 25 Divide each side by '8'. x = 3.125 Simplifying x = 3.125
| 2cos(3x)+1=0 | | (x^2)dx-(x^3+y^3)dy=0 | | 35=26+b | | t/3=2.4 | | 3(z+1)= | | 37=16-3c | | 0.5y+2=y-1 | | -3x=-5y+b | | 1/4a=44 | | 2x-11+47+x=180 | | 5200/1045 | | 9x+4-2(x-1)=3(x+2) | | 16-y=20-8 | | -(3x-8y+4)=0 | | 5x+7(-x-9)=-51 | | 7-(3z-2)=1-4z | | 4y+44=8(y+4) | | 5m+2s=62 | | 36-3=11 | | 5/8x-5/21=-3/8x-2/3 | | 36-n=11 | | 251.76=6(0.08m+30.70+0.20(30.70)) | | u+(-4)=-11 | | 36-12.5=11 | | 28+32=5(s-24) | | p(6)=2x+8 | | 0=28x^2-x-15 | | 62=2x-4(-2x+12) | | 3y-10=9y+14 | | 40+x+20+5x=180 | | 3/2log4-1/2logx=3 | | 452.16=3.14*d |