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r=250
We move all terms to the left:
r-(250)=0
We move all terms containing r to the left, all other terms to the right
r=250
| g+171=477 | | (7x+5)+36+90=180 | | (51)=(9y-6) | | m/29=22 | | 2((y+6)=2y | | 2(x+4.5)=12 | | -6c=-10c+4c | | j+750=44 | | (8x-17)+51+x=180 | | -33=(-7)=29+m | | 7,475x-2,405=65(115x-37) | | (c=7)5c-8 | | y+548=349 | | 8x+15x-4=180 | | (4x-5)=72 | | b+22=26 | | k-30=140 | | 8x=15x-4 | | 672=16r | | (15x-4)+(8x)=180 | | 17x+66=17x+2 | | q+220=860 | | 8/7=v/12 | | `3a-5=7 | | 7a-5a=4 | | 28÷7=2+x | | 2(2x+3)=6x+3-2x+3 | | -5(x-1)=-4-7x | | 15x-4=8x | | b-5=60 | | 8q-5+81=180 | | (4x-5)=59 |