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Simplifying (4x + 10) + (x + 20) = 90 Reorder the terms: (10 + 4x) + (x + 20) = 90 Remove parenthesis around (10 + 4x) 10 + 4x + (x + 20) = 90 Reorder the terms: 10 + 4x + (20 + x) = 90 Remove parenthesis around (20 + x) 10 + 4x + 20 + x = 90 Reorder the terms: 10 + 20 + 4x + x = 90 Combine like terms: 10 + 20 = 30 30 + 4x + x = 90 Combine like terms: 4x + x = 5x 30 + 5x = 90 Solving 30 + 5x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-30' to each side of the equation. 30 + -30 + 5x = 90 + -30 Combine like terms: 30 + -30 = 0 0 + 5x = 90 + -30 5x = 90 + -30 Combine like terms: 90 + -30 = 60 5x = 60 Divide each side by '5'. x = 12 Simplifying x = 12
| 3x^2-10x=-3 | | 6.4+3.2= | | 32*X=448 | | 10k+1=3k | | 90-x=360-x-220 | | -13a-48=5a | | 8x+4+140=3x+4 | | 90=x^2+8x+56 | | 4(5-x)=60 | | -30x^3+40x^2=0 | | 15h-4=49 | | 4w+6=24w | | 8x+4-140=3x+4 | | 6+t=-3 | | a^2+7=8a | | 7-1y-1y=-1 | | 3(x-5)=4(x+9) | | 2(-7x-1)=-16 | | 2(x+2)=-3(x+1.3) | | 2m^2-20m=2m-60 | | 32*X=403 | | -15b-40=-7b | | 2(x+2)=-3x+1.3 | | x+2x-8=90 | | x^2-10x=-3 | | -5-x=6x-75 | | 2(x+2)=-3x+4/3 | | 6(x+5)=-48 | | 2.7v+17.1=0.1v-13.84 | | 46-3=-23 | | x+6=4x+-6 | | 25c+25=125 |