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Simplifying 47 + (2r + 3) = 90 Reorder the terms: 47 + (3 + 2r) = 90 Remove parenthesis around (3 + 2r) 47 + 3 + 2r = 90 Combine like terms: 47 + 3 = 50 50 + 2r = 90 Solving 50 + 2r = 90 Solving for variable 'r'. Move all terms containing r to the left, all other terms to the right. Add '-50' to each side of the equation. 50 + -50 + 2r = 90 + -50 Combine like terms: 50 + -50 = 0 0 + 2r = 90 + -50 2r = 90 + -50 Combine like terms: 90 + -50 = 40 2r = 40 Divide each side by '2'. r = 20 Simplifying r = 20
| 6+8x-10x= | | 13x-2x^2=13 | | 6=-10+4d | | 7(7x+11)=-8(2x+1) | | 4(2x+15)-8=36 | | 18=9+3t | | -9(2+3p)+9(-6-9p)= | | 8x+2=-9x+8 | | 16u+-15u+-5u+20u-11u=-15 | | 5y-100=20(3) | | 1.15x=40 | | x*0.15=40 | | 7(2x+5)=14x-8 | | P-24=44 | | 33+k=65 | | 5a+11+3a-7=-7 | | M+28=42 | | .125(6+x)=3 | | N+15=43 | | 6q+q-2q-2q+2q=20 | | -3(5x+4)= | | -3(5x-4)= | | -1+x-2x+(-9)= | | 75+(45-2r)=90 | | 2+7a=-14-a+6a | | -13y+15y-17y+14y=18 | | -1+-2x+(-9)= | | x+5=-6x-11 | | 3(9+5r)-8(1+k)= | | -9-(-8)+15-13-(-6)= | | 3(-5x+4)= | | 3b-11=-2 |