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Simplifying 35x + 42(20 + -1x) = 728 35x + (20 * 42 + -1x * 42) = 728 35x + (840 + -42x) = 728 Reorder the terms: 840 + 35x + -42x = 728 Combine like terms: 35x + -42x = -7x 840 + -7x = 728 Solving 840 + -7x = 728 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-840' to each side of the equation. 840 + -840 + -7x = 728 + -840 Combine like terms: 840 + -840 = 0 0 + -7x = 728 + -840 -7x = 728 + -840 Combine like terms: 728 + -840 = -112 -7x = -112 Divide each side by '-7'. x = 16 Simplifying x = 16
| 2x+y=2z+y+3 | | 9(x+-3)=9x+15 | | 3/9=3 | | 9(x+4)+4=9x+6 | | (3x)(4x)=24 | | 3.1(-1.2y+3.2y-1.1)= | | 8(a-3)-2a= | | x=-6y+4 | | (3)(4)= | | 7x+6y=9.50 | | -4(3y-4)-y=-4(y-4) | | x(y+7)=13fory | | x(y+7)=13 | | 2(5-2b)-6b= | | 9y+4=90 | | 0.7(7x+3)=1.8-(x+9) | | 2x^3+4x^2+3x-1=0 | | 3(4-2x)=4-(7x-8) | | 2x^3-4x^2+3x+1=0 | | 5(r-10)+4=6(r+4)-68 | | (9p^2-4p-6)-(-3p^2+8p+5)= | | .8x-2=.9 | | 4b-6b= | | (16-12i)-(11-11i)= | | (2a+32)-(4a-4)=180 | | 9x+8x-2x=71+4 | | 2a+32=180 | | (4y+7)(5+y)=0 | | (2a+32)=180 | | 70=30+(5x)+(2p) | | -6x-8y-9x+12y= | | 70=30+(5x)+(2x) |