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Simplifying 3x + -1(2x + -7) = 3(1 + x) Reorder the terms: 3x + -1(-7 + 2x) = 3(1 + x) 3x + (-7 * -1 + 2x * -1) = 3(1 + x) 3x + (7 + -2x) = 3(1 + x) Reorder the terms: 7 + 3x + -2x = 3(1 + x) Combine like terms: 3x + -2x = 1x 7 + 1x = 3(1 + x) 7 + 1x = (1 * 3 + x * 3) 7 + 1x = (3 + 3x) Solving 7 + 1x = 3 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. 7 + 1x + -3x = 3 + 3x + -3x Combine like terms: 1x + -3x = -2x 7 + -2x = 3 + 3x + -3x Combine like terms: 3x + -3x = 0 7 + -2x = 3 + 0 7 + -2x = 3 Add '-7' to each side of the equation. 7 + -7 + -2x = 3 + -7 Combine like terms: 7 + -7 = 0 0 + -2x = 3 + -7 -2x = 3 + -7 Combine like terms: 3 + -7 = -4 -2x = -4 Divide each side by '-2'. x = 2 Simplifying x = 2
| S=r | | x^2+2xy+y^2=x^2+y^2 | | 3a+6-2a+9+5a= | | 9k+3=8k+19 | | x^2+2xy+y^2=x+y^2 | | 1/6(2x-9)=7 | | 7-2i= | | 31=-42+x | | f(x)=3x+7 | | 3(x-2)+2(x+1)=-19 | | 5m-24=36 | | 3x+4x+(4x+24)+x=360 | | 5x+8y=480 | | 3x+10=6x-4 | | 6(x-3)-10=32 | | 4x+3(x+2)=58 | | 4x+3(x+2)=54 | | 7+m+(6m-3)= | | 15-3x-1=12 | | 7+m+9(6m-3)= | | 8x+14=8x+14 | | 8(x+14)=8x+112 | | -29=4(u-8)-7u | | 5c-15=2c+5 | | 102.569-10.478= | | 12d-40=8 | | 2x+14=-8x-18 | | 2x+14=2x-18 | | 5n+16=n-8 | | s^3-510=0 | | 0=3x+9 | | 8c-3(c+4)=43 |